Home / 20,614.02-28,439.23-12,642.40

Finding the Fourth Proportional to 20,614.02, 28,439.23 and 12,642.40

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Solution

The fourth proportional to 20,614.02, 28,439.23 and 12,642.40 is: 17,441.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,614.02 : 28,439.23 = 12,642.40 : x
  2. Step 2: Convert to fraction form
    20,614.02/28,439.23 = 12,642.40/x
  3. Step 3: Cross multiply
    20,614.02x = 28,439.23 × 12,642.40
  4. Step 4: Simplify right side
    20,614.02x = 359,540,121.35
  5. Step 5: Solve for x
    x = 359,540,121.35/20,614.02
  6. Step 6: Final answer
    x = 17,441.53

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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.