Home / 12,623.19-17,423.15-7,321.20

Finding the Fourth Proportional to 12,623.19, 17,423.15 and 7,321.20

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Solution

The fourth proportional to 12,623.19, 17,423.15 and 7,321.20 is: 10,105.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,623.19 : 17,423.15 = 7,321.20 : x
  2. Step 2: Convert to fraction form
    12,623.19/17,423.15 = 7,321.20/x
  3. Step 3: Cross multiply
    12,623.19x = 17,423.15 × 7,321.20
  4. Step 4: Simplify right side
    12,623.19x = 127,558,329.17
  5. Step 5: Solve for x
    x = 127,558,329.17/12,623.19
  6. Step 6: Final answer
    x = 10,105.08

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Half scale
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Double scale
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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.