Home / 21,861.90-30,158.73-14,304.87

Finding the Fourth Proportional to 21,861.90, 30,158.73 and 14,304.87

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Solution

The fourth proportional to 21,861.90, 30,158.73 and 14,304.87 is: 19,733.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,861.90 : 30,158.73 = 14,304.87 : x
  2. Step 2: Convert to fraction form
    21,861.90/30,158.73 = 14,304.87/x
  3. Step 3: Cross multiply
    21,861.90x = 30,158.73 × 14,304.87
  4. Step 4: Simplify right side
    21,861.90x = 431,416,712.02
  5. Step 5: Solve for x
    x = 431,416,712.02/21,861.90
  6. Step 6: Final answer
    x = 19,733.72

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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.