Home / 31,000.28-42,779.46-16,852.76

Finding the Fourth Proportional to 31,000.28, 42,779.46 and 16,852.76

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Solution

The fourth proportional to 31,000.28, 42,779.46 and 16,852.76 is: 23,256.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,000.28 : 42,779.46 = 16,852.76 : x
  2. Step 2: Convert to fraction form
    31,000.28/42,779.46 = 16,852.76/x
  3. Step 3: Cross multiply
    31,000.28x = 42,779.46 × 16,852.76
  4. Step 4: Simplify right side
    31,000.28x = 720,951,972.31
  5. Step 5: Solve for x
    x = 720,951,972.31/31,000.28
  6. Step 6: Final answer
    x = 23,256.31

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Half scale
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Double scale
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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.