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Finding the Fourth Proportional to 28,592.67, 42,886.95 and 8,870.72

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Solution

The fourth proportional to 28,592.67, 42,886.95 and 8,870.72 is: 13,305.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,592.67 : 42,886.95 = 8,870.72 : x
  2. Step 2: Convert to fraction form
    28,592.67/42,886.95 = 8,870.72/x
  3. Step 3: Cross multiply
    28,592.67x = 42,886.95 × 8,870.72
  4. Step 4: Simplify right side
    28,592.67x = 380,437,910.67
  5. Step 5: Solve for x
    x = 380,437,910.67/28,592.67
  6. Step 6: Final answer
    x = 13,305.43

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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.