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Finding the Fourth Proportional to 43,990.68, 65,972.13 and 14,401.71

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Solution

The fourth proportional to 43,990.68, 65,972.13 and 14,401.71 is: 21,598.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,990.68 : 65,972.13 = 14,401.71 : x
  2. Step 2: Convert to fraction form
    43,990.68/65,972.13 = 14,401.71/x
  3. Step 3: Cross multiply
    43,990.68x = 65,972.13 × 14,401.71
  4. Step 4: Simplify right side
    43,990.68x = 950,111,484.34
  5. Step 5: Solve for x
    x = 950,111,484.34/43,990.68
  6. Step 6: Final answer
    x = 21,598.02

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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.