Home / 28,830.56-39,727.12-21,264.90

Finding the Fourth Proportional to 28,830.56, 39,727.12 and 21,264.90

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Solution

The fourth proportional to 28,830.56, 39,727.12 and 21,264.90 is: 29,302.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,830.56 : 39,727.12 = 21,264.90 : x
  2. Step 2: Convert to fraction form
    28,830.56/39,727.12 = 21,264.90/x
  3. Step 3: Cross multiply
    28,830.56x = 39,727.12 × 21,264.90
  4. Step 4: Simplify right side
    28,830.56x = 844,793,436.92
  5. Step 5: Solve for x
    x = 844,793,436.92/28,830.56
  6. Step 6: Final answer
    x = 29,302.01

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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.