Home / 53,613.20-80,439.30-18,556.40

Finding the Fourth Proportional to 53,613.20, 80,439.30 and 18,556.40

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Solution

The fourth proportional to 53,613.20, 80,439.30 and 18,556.40 is: 27,841.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,613.20 : 80,439.30 = 18,556.40 : x
  2. Step 2: Convert to fraction form
    53,613.20/80,439.30 = 18,556.40/x
  3. Step 3: Cross multiply
    53,613.20x = 80,439.30 × 18,556.40
  4. Step 4: Simplify right side
    53,613.20x = 1,492,663,826.52
  5. Step 5: Solve for x
    x = 1,492,663,826.52/53,613.20
  6. Step 6: Final answer
    x = 27,841.35

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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.