Home / 42,815.70-64,217.88-19,436.76

Finding the Fourth Proportional to 42,815.70, 64,217.88 and 19,436.76

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Solution

The fourth proportional to 42,815.70, 64,217.88 and 19,436.76 is: 29,152.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,815.70 : 64,217.88 = 19,436.76 : x
  2. Step 2: Convert to fraction form
    42,815.70/64,217.88 = 19,436.76/x
  3. Step 3: Cross multiply
    42,815.70x = 64,217.88 × 19,436.76
  4. Step 4: Simplify right side
    42,815.70x = 1,248,187,521.27
  5. Step 5: Solve for x
    x = 1,248,187,521.27/42,815.70
  6. Step 6: Final answer
    x = 29,152.57

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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.