Home / 31,272.07-43,155.40-16,931.90

Finding the Fourth Proportional to 31,272.07, 43,155.40 and 16,931.90

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Solution

The fourth proportional to 31,272.07, 43,155.40 and 16,931.90 is: 23,365.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,272.07 : 43,155.40 = 16,931.90 : x
  2. Step 2: Convert to fraction form
    31,272.07/43,155.40 = 16,931.90/x
  3. Step 3: Cross multiply
    31,272.07x = 43,155.40 × 16,931.90
  4. Step 4: Simplify right side
    31,272.07x = 730,702,959.59
  5. Step 5: Solve for x
    x = 730,702,959.59/31,272.07
  6. Step 6: Final answer
    x = 23,365.99

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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.