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Finding the Fourth Proportional to 28,554.40, 42,812.40 and 15,229.60

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Solution

The fourth proportional to 28,554.40, 42,812.40 and 15,229.60 is: 22,834.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,554.40 : 42,812.40 = 15,229.60 : x
  2. Step 2: Convert to fraction form
    28,554.40/42,812.40 = 15,229.60/x
  3. Step 3: Cross multiply
    28,554.40x = 42,812.40 × 15,229.60
  4. Step 4: Simplify right side
    28,554.40x = 652,015,727.04
  5. Step 5: Solve for x
    x = 652,015,727.04/28,554.40
  6. Step 6: Final answer
    x = 22,834.16

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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.