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Finding the Fourth Proportional to 15,088.92, 20,822.79 and 8,374.98

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Solution

The fourth proportional to 15,088.92, 20,822.79 and 8,374.98 is: 11,557.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,088.92 : 20,822.79 = 8,374.98 : x
  2. Step 2: Convert to fraction form
    15,088.92/20,822.79 = 8,374.98/x
  3. Step 3: Cross multiply
    15,088.92x = 20,822.79 × 8,374.98
  4. Step 4: Simplify right side
    15,088.92x = 174,390,449.79
  5. Step 5: Solve for x
    x = 174,390,449.79/15,088.92
  6. Step 6: Final answer
    x = 11,557.52

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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.