Home / 20,387.52-30,578.40-6,534.72

Finding the Fourth Proportional to 20,387.52, 30,578.40 and 6,534.72

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Solution

The fourth proportional to 20,387.52, 30,578.40 and 6,534.72 is: 9,801.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.52 : 30,578.40 = 6,534.72 : x
  2. Step 2: Convert to fraction form
    20,387.52/30,578.40 = 6,534.72/x
  3. Step 3: Cross multiply
    20,387.52x = 30,578.40 × 6,534.72
  4. Step 4: Simplify right side
    20,387.52x = 199,821,282.05
  5. Step 5: Solve for x
    x = 199,821,282.05/20,387.52
  6. Step 6: Final answer
    x = 9,801.16

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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.