Home / 10,057.20-15,085.80-4,220.40

Finding the Fourth Proportional to 10,057.20, 15,085.80 and 4,220.40

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Solution

The fourth proportional to 10,057.20, 15,085.80 and 4,220.40 is: 6,330.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,057.20 : 15,085.80 = 4,220.40 : x
  2. Step 2: Convert to fraction form
    10,057.20/15,085.80 = 4,220.40/x
  3. Step 3: Cross multiply
    10,057.20x = 15,085.80 × 4,220.40
  4. Step 4: Simplify right side
    10,057.20x = 63,668,110.32
  5. Step 5: Solve for x
    x = 63,668,110.32/10,057.20
  6. Step 6: Final answer
    x = 6,330.60

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Similar ratio
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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.