Home / 42,857.10-64,293.46-13,272.92

Finding the Fourth Proportional to 42,857.10, 64,293.46 and 13,272.92

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Solution

The fourth proportional to 42,857.10, 64,293.46 and 13,272.92 is: 19,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,857.10 : 64,293.46 = 13,272.92 : x
  2. Step 2: Convert to fraction form
    42,857.10/64,293.46 = 13,272.92/x
  3. Step 3: Cross multiply
    42,857.10x = 64,293.46 × 13,272.92
  4. Step 4: Simplify right side
    42,857.10x = 853,361,951.10
  5. Step 5: Solve for x
    x = 853,361,951.10/42,857.10
  6. Step 6: Final answer
    x = 19,911.80

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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.