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Finding the Fourth Proportional to 12,329.64, 17,018.10 and 7,551.18

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Solution

The fourth proportional to 12,329.64, 17,018.10 and 7,551.18 is: 10,422.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,329.64 : 17,018.10 = 7,551.18 : x
  2. Step 2: Convert to fraction form
    12,329.64/17,018.10 = 7,551.18/x
  3. Step 3: Cross multiply
    12,329.64x = 17,018.10 × 7,551.18
  4. Step 4: Simplify right side
    12,329.64x = 128,506,736.36
  5. Step 5: Solve for x
    x = 128,506,736.36/12,329.64
  6. Step 6: Final answer
    x = 10,422.59

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Half scale
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Double scale
Find fourth proportional to 12,330.64, 17,019.48 and 7,552.18
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.