Home / 28,521.78-42,747-13,726.74

Finding the Fourth Proportional to 28,521.78, 42,747 and 13,726.74

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Solution

The fourth proportional to 28,521.78, 42,747 and 13,726.74 is: 20,572.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,521.78 : 42,747 = 13,726.74 : x
  2. Step 2: Convert to fraction form
    28,521.78/42,747 = 13,726.74/x
  3. Step 3: Cross multiply
    28,521.78x = 42,747 × 13,726.74
  4. Step 4: Simplify right side
    28,521.78x = 586,776,954.78
  5. Step 5: Solve for x
    x = 586,776,954.78/28,521.78
  6. Step 6: Final answer
    x = 20,572.94

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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.