Home / 12,411.19-17,130.12-7,635.20

Finding the Fourth Proportional to 12,411.19, 17,130.12 and 7,635.20

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Solution

The fourth proportional to 12,411.19, 17,130.12 and 7,635.20 is: 10,538.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,411.19 : 17,130.12 = 7,635.20 : x
  2. Step 2: Convert to fraction form
    12,411.19/17,130.12 = 7,635.20/x
  3. Step 3: Cross multiply
    12,411.19x = 17,130.12 × 7,635.20
  4. Step 4: Simplify right side
    12,411.19x = 130,791,777.94
  5. Step 5: Solve for x
    x = 130,791,777.94/12,411.19
  6. Step 6: Final answer
    x = 10,538.21

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Half scale
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Double scale
Find fourth proportional to 12,412.19, 17,131.50 and 7,636.20
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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.