Home / 21,737.68-30,002.66-13,242.56

Finding the Fourth Proportional to 21,737.68, 30,002.66 and 13,242.56

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Solution

The fourth proportional to 21,737.68, 30,002.66 and 13,242.56 is: 18,277.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,737.68 : 30,002.66 = 13,242.56 : x
  2. Step 2: Convert to fraction form
    21,737.68/30,002.66 = 13,242.56/x
  3. Step 3: Cross multiply
    21,737.68x = 30,002.66 × 13,242.56
  4. Step 4: Simplify right side
    21,737.68x = 397,312,025.21
  5. Step 5: Solve for x
    x = 397,312,025.21/21,737.68
  6. Step 6: Final answer
    x = 18,277.57

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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.