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Finding the Fourth Proportional to 28,599.68, 42,895.84 and 8,877.76

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Solution

The fourth proportional to 28,599.68, 42,895.84 and 8,877.76 is: 13,315.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,599.68 : 42,895.84 = 8,877.76 : x
  2. Step 2: Convert to fraction form
    28,599.68/42,895.84 = 8,877.76/x
  3. Step 3: Cross multiply
    28,599.68x = 42,895.84 × 8,877.76
  4. Step 4: Simplify right side
    28,599.68x = 380,818,972.52
  5. Step 5: Solve for x
    x = 380,818,972.52/28,599.68
  6. Step 6: Final answer
    x = 13,315.50

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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.