Home / 20,691.63-31,037.51-7,543.98

Finding the Fourth Proportional to 20,691.63, 31,037.51 and 7,543.98

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Solution

The fourth proportional to 20,691.63, 31,037.51 and 7,543.98 is: 11,315.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691.63 : 31,037.51 = 7,543.98 : x
  2. Step 2: Convert to fraction form
    20,691.63/31,037.51 = 7,543.98/x
  3. Step 3: Cross multiply
    20,691.63x = 31,037.51 × 7,543.98
  4. Step 4: Simplify right side
    20,691.63x = 234,146,354.69
  5. Step 5: Solve for x
    x = 234,146,354.69/20,691.63
  6. Step 6: Final answer
    x = 11,315.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.