Home / 20,752.26-31,136.16-12,438.24

Finding the Fourth Proportional to 20,752.26, 31,136.16 and 12,438.24

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Solution

The fourth proportional to 20,752.26, 31,136.16 and 12,438.24 is: 18,662.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.26 : 31,136.16 = 12,438.24 : x
  2. Step 2: Convert to fraction form
    20,752.26/31,136.16 = 12,438.24/x
  3. Step 3: Cross multiply
    20,752.26x = 31,136.16 × 12,438.24
  4. Step 4: Simplify right side
    20,752.26x = 387,279,030.76
  5. Step 5: Solve for x
    x = 387,279,030.76/20,752.26
  6. Step 6: Final answer
    x = 18,662.02

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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.