Home / 13,621.40-20,432.10-5,301.80

Finding the Fourth Proportional to 13,621.40, 20,432.10 and 5,301.80

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Solution

The fourth proportional to 13,621.40, 20,432.10 and 5,301.80 is: 7,952.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.40 : 20,432.10 = 5,301.80 : x
  2. Step 2: Convert to fraction form
    13,621.40/20,432.10 = 5,301.80/x
  3. Step 3: Cross multiply
    13,621.40x = 20,432.10 × 5,301.80
  4. Step 4: Simplify right side
    13,621.40x = 108,326,907.78
  5. Step 5: Solve for x
    x = 108,326,907.78/13,621.40
  6. Step 6: Final answer
    x = 7,952.70

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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.