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Finding the Fourth Proportional to 15,589.62, 21,512.64 and 8,875.93

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Solution

The fourth proportional to 15,589.62, 21,512.64 and 8,875.93 is: 12,248.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,589.62 : 21,512.64 = 8,875.93 : x
  2. Step 2: Convert to fraction form
    15,589.62/21,512.64 = 8,875.93/x
  3. Step 3: Cross multiply
    15,589.62x = 21,512.64 × 8,875.93
  4. Step 4: Simplify right side
    15,589.62x = 190,944,686.76
  5. Step 5: Solve for x
    x = 190,944,686.76/15,589.62
  6. Step 6: Final answer
    x = 12,248.19

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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.