Home / 15,220.13-21,002.30-9,553.06

Finding the Fourth Proportional to 15,220.13, 21,002.30 and 9,553.06

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Solution

The fourth proportional to 15,220.13, 21,002.30 and 9,553.06 is: 13,182.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.13 : 21,002.30 = 9,553.06 : x
  2. Step 2: Convert to fraction form
    15,220.13/21,002.30 = 9,553.06/x
  3. Step 3: Cross multiply
    15,220.13x = 21,002.30 × 9,553.06
  4. Step 4: Simplify right side
    15,220.13x = 200,636,246.35
  5. Step 5: Solve for x
    x = 200,636,246.35/15,220.13
  6. Step 6: Final answer
    x = 13,182.30

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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.