Home / 45,147.49-67,721.80-13,555.71

Finding the Fourth Proportional to 45,147.49, 67,721.80 and 13,555.71

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Solution

The fourth proportional to 45,147.49, 67,721.80 and 13,555.71 is: 20,333.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,147.49 : 67,721.80 = 13,555.71 : x
  2. Step 2: Convert to fraction form
    45,147.49/67,721.80 = 13,555.71/x
  3. Step 3: Cross multiply
    45,147.49x = 67,721.80 × 13,555.71
  4. Step 4: Simplify right side
    45,147.49x = 918,017,139.69
  5. Step 5: Solve for x
    x = 918,017,139.69/45,147.49
  6. Step 6: Final answer
    x = 20,333.74

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Similar ratio
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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.