Home / 21,446.76-29,581.70-14,720.71

Finding the Fourth Proportional to 21,446.76, 29,581.70 and 14,720.71

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Solution

The fourth proportional to 21,446.76, 29,581.70 and 14,720.71 is: 20,304.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,446.76 : 29,581.70 = 14,720.71 : x
  2. Step 2: Convert to fraction form
    21,446.76/29,581.70 = 14,720.71/x
  3. Step 3: Cross multiply
    21,446.76x = 29,581.70 × 14,720.71
  4. Step 4: Simplify right side
    21,446.76x = 435,463,690.57
  5. Step 5: Solve for x
    x = 435,463,690.57/21,446.76
  6. Step 6: Final answer
    x = 20,304.40

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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.