Home / 28,520.90-39,345.74-18,452.60

Finding the Fourth Proportional to 28,520.90, 39,345.74 and 18,452.60

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Solution

The fourth proportional to 28,520.90, 39,345.74 and 18,452.60 is: 25,456.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.90 : 39,345.74 = 18,452.60 : x
  2. Step 2: Convert to fraction form
    28,520.90/39,345.74 = 18,452.60/x
  3. Step 3: Cross multiply
    28,520.90x = 39,345.74 × 18,452.60
  4. Step 4: Simplify right side
    28,520.90x = 726,031,346.42
  5. Step 5: Solve for x
    x = 726,031,346.42/28,520.90
  6. Step 6: Final answer
    x = 25,456.12

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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.