Home / 27,685.32-38,206.14-15,109.80

Finding the Fourth Proportional to 27,685.32, 38,206.14 and 15,109.80

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Solution

The fourth proportional to 27,685.32, 38,206.14 and 15,109.80 is: 20,851.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,685.32 : 38,206.14 = 15,109.80 : x
  2. Step 2: Convert to fraction form
    27,685.32/38,206.14 = 15,109.80/x
  3. Step 3: Cross multiply
    27,685.32x = 38,206.14 × 15,109.80
  4. Step 4: Simplify right side
    27,685.32x = 577,287,134.17
  5. Step 5: Solve for x
    x = 577,287,134.17/27,685.32
  6. Step 6: Final answer
    x = 20,851.74

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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.