Home / 40,722.60-61,085.76-11,139.80

Finding the Fourth Proportional to 40,722.60, 61,085.76 and 11,139.80

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Solution

The fourth proportional to 40,722.60, 61,085.76 and 11,139.80 is: 16,710.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,722.60 : 61,085.76 = 11,139.80 : x
  2. Step 2: Convert to fraction form
    40,722.60/61,085.76 = 11,139.80/x
  3. Step 3: Cross multiply
    40,722.60x = 61,085.76 × 11,139.80
  4. Step 4: Simplify right side
    40,722.60x = 680,483,149.25
  5. Step 5: Solve for x
    x = 680,483,149.25/40,722.60
  6. Step 6: Final answer
    x = 16,710.21

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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.