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Finding the Fourth Proportional to 15,088.64, 20,822.01 and 8,373.88

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Solution

The fourth proportional to 15,088.64, 20,822.01 and 8,373.88 is: 11,555.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,088.64 : 20,822.01 = 8,373.88 : x
  2. Step 2: Convert to fraction form
    15,088.64/20,822.01 = 8,373.88/x
  3. Step 3: Cross multiply
    15,088.64x = 20,822.01 × 8,373.88
  4. Step 4: Simplify right side
    15,088.64x = 174,360,908.99
  5. Step 5: Solve for x
    x = 174,360,908.99/15,088.64
  6. Step 6: Final answer
    x = 11,555.77

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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.