Home / 42,869.08-64,280.13-13,278.70

Finding the Fourth Proportional to 42,869.08, 64,280.13 and 13,278.70

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Solution

The fourth proportional to 42,869.08, 64,280.13 and 13,278.70 is: 19,910.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,869.08 : 64,280.13 = 13,278.70 : x
  2. Step 2: Convert to fraction form
    42,869.08/64,280.13 = 13,278.70/x
  3. Step 3: Cross multiply
    42,869.08x = 64,280.13 × 13,278.70
  4. Step 4: Simplify right side
    42,869.08x = 853,556,562.23
  5. Step 5: Solve for x
    x = 853,556,562.23/42,869.08
  6. Step 6: Final answer
    x = 19,910.77

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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.