Home / 21,165.28-31,748.18-14,589.70

Finding the Fourth Proportional to 21,165.28, 31,748.18 and 14,589.70

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Solution

The fourth proportional to 21,165.28, 31,748.18 and 14,589.70 is: 21,884.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,165.28 : 31,748.18 = 14,589.70 : x
  2. Step 2: Convert to fraction form
    21,165.28/31,748.18 = 14,589.70/x
  3. Step 3: Cross multiply
    21,165.28x = 31,748.18 × 14,589.70
  4. Step 4: Simplify right side
    21,165.28x = 463,196,421.75
  5. Step 5: Solve for x
    x = 463,196,421.75/21,165.28
  6. Step 6: Final answer
    x = 21,884.73

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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.