Home / 20,439.18-28,188.51-13,262.03

Finding the Fourth Proportional to 20,439.18, 28,188.51 and 13,262.03

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Solution

The fourth proportional to 20,439.18, 28,188.51 and 13,262.03 is: 18,290.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.18 : 28,188.51 = 13,262.03 : x
  2. Step 2: Convert to fraction form
    20,439.18/28,188.51 = 13,262.03/x
  3. Step 3: Cross multiply
    20,439.18x = 28,188.51 × 13,262.03
  4. Step 4: Simplify right side
    20,439.18x = 373,836,658.02
  5. Step 5: Solve for x
    x = 373,836,658.02/20,439.18
  6. Step 6: Final answer
    x = 18,290.20

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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.