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Finding the Fourth Proportional to 28,555.84, 42,839.23 and 8,830.92

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Solution

The fourth proportional to 28,555.84, 42,839.23 and 8,830.92 is: 13,248.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,555.84 : 42,839.23 = 8,830.92 : x
  2. Step 2: Convert to fraction form
    28,555.84/42,839.23 = 8,830.92/x
  3. Step 3: Cross multiply
    28,555.84x = 42,839.23 × 8,830.92
  4. Step 4: Simplify right side
    28,555.84x = 378,309,968.12
  5. Step 5: Solve for x
    x = 378,309,968.12/28,555.84
  6. Step 6: Final answer
    x = 13,248.08

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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.