Home / 27,781.04-38,337.90-15,206.60

Finding the Fourth Proportional to 27,781.04, 38,337.90 and 15,206.60

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Solution

The fourth proportional to 27,781.04, 38,337.90 and 15,206.60 is: 20,985.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,781.04 : 38,337.90 = 15,206.60 : x
  2. Step 2: Convert to fraction form
    27,781.04/38,337.90 = 15,206.60/x
  3. Step 3: Cross multiply
    27,781.04x = 38,337.90 × 15,206.60
  4. Step 4: Simplify right side
    27,781.04x = 582,989,110.14
  5. Step 5: Solve for x
    x = 582,989,110.14/27,781.04
  6. Step 6: Final answer
    x = 20,985.14

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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.