Home / 27,740.66-38,280.14-15,801.80

Finding the Fourth Proportional to 27,740.66, 38,280.14 and 15,801.80

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Solution

The fourth proportional to 27,740.66, 38,280.14 and 15,801.80 is: 21,805.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,740.66 : 38,280.14 = 15,801.80 : x
  2. Step 2: Convert to fraction form
    27,740.66/38,280.14 = 15,801.80/x
  3. Step 3: Cross multiply
    27,740.66x = 38,280.14 × 15,801.80
  4. Step 4: Simplify right side
    27,740.66x = 604,895,116.25
  5. Step 5: Solve for x
    x = 604,895,116.25/27,740.66
  6. Step 6: Final answer
    x = 21,805.36

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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.