Home / 27,287.76-37,646.40-20,135.04

Finding the Fourth Proportional to 27,287.76, 37,646.40 and 20,135.04

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Solution

The fourth proportional to 27,287.76, 37,646.40 and 20,135.04 is: 27,778.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,287.76 : 37,646.40 = 20,135.04 : x
  2. Step 2: Convert to fraction form
    27,287.76/37,646.40 = 20,135.04/x
  3. Step 3: Cross multiply
    27,287.76x = 37,646.40 × 20,135.04
  4. Step 4: Simplify right side
    27,287.76x = 758,011,769.86
  5. Step 5: Solve for x
    x = 758,011,769.86/27,287.76
  6. Step 6: Final answer
    x = 27,778.45

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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.