Home / 42,772.46-64,169.76-13,189.64

Finding the Fourth Proportional to 42,772.46, 64,169.76 and 13,189.64

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Solution

The fourth proportional to 42,772.46, 64,169.76 and 13,189.64 is: 19,787.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,772.46 : 64,169.76 = 13,189.64 : x
  2. Step 2: Convert to fraction form
    42,772.46/64,169.76 = 13,189.64/x
  3. Step 3: Cross multiply
    42,772.46x = 64,169.76 × 13,189.64
  4. Step 4: Simplify right side
    42,772.46x = 846,376,033.29
  5. Step 5: Solve for x
    x = 846,376,033.29/42,772.46
  6. Step 6: Final answer
    x = 19,787.87

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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.