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Finding the Fourth Proportional to 18,607.64, 27,861.66 and 15,655.19

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Solution

The fourth proportional to 18,607.64, 27,861.66 and 15,655.19 is: 23,440.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.64 : 27,861.66 = 15,655.19 : x
  2. Step 2: Convert to fraction form
    18,607.64/27,861.66 = 15,655.19/x
  3. Step 3: Cross multiply
    18,607.64x = 27,861.66 × 15,655.19
  4. Step 4: Simplify right side
    18,607.64x = 436,179,441.71
  5. Step 5: Solve for x
    x = 436,179,441.71/18,607.64
  6. Step 6: Final answer
    x = 23,440.89

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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.