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Finding the Fourth Proportional to 18,523.79, 25,563.12 and 10,457.87

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Solution

The fourth proportional to 18,523.79, 25,563.12 and 10,457.87 is: 14,432.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,523.79 : 25,563.12 = 10,457.87 : x
  2. Step 2: Convert to fraction form
    18,523.79/25,563.12 = 10,457.87/x
  3. Step 3: Cross multiply
    18,523.79x = 25,563.12 × 10,457.87
  4. Step 4: Simplify right side
    18,523.79x = 267,335,785.75
  5. Step 5: Solve for x
    x = 267,335,785.75/18,523.79
  6. Step 6: Final answer
    x = 14,432.02

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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.