Home / 31,004.02-42,785.45-16,856.90

Finding the Fourth Proportional to 31,004.02, 42,785.45 and 16,856.90

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Solution

The fourth proportional to 31,004.02, 42,785.45 and 16,856.90 is: 23,262.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,004.02 : 42,785.45 = 16,856.90 : x
  2. Step 2: Convert to fraction form
    31,004.02/42,785.45 = 16,856.90/x
  3. Step 3: Cross multiply
    31,004.02x = 42,785.45 × 16,856.90
  4. Step 4: Simplify right side
    31,004.02x = 721,230,052.11
  5. Step 5: Solve for x
    x = 721,230,052.11/31,004.02
  6. Step 6: Final answer
    x = 23,262.47

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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.