Home / 28,726.25-39,642.41-16,787.20

Finding the Fourth Proportional to 28,726.25, 39,642.41 and 16,787.20

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Solution

The fourth proportional to 28,726.25, 39,642.41 and 16,787.20 is: 23,166.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,726.25 : 39,642.41 = 16,787.20 : x
  2. Step 2: Convert to fraction form
    28,726.25/39,642.41 = 16,787.20/x
  3. Step 3: Cross multiply
    28,726.25x = 39,642.41 × 16,787.20
  4. Step 4: Simplify right side
    28,726.25x = 665,485,082.34
  5. Step 5: Solve for x
    x = 665,485,082.34/28,726.25
  6. Step 6: Final answer
    x = 23,166.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.