Home / 10,077.60-15,116.40-7,291.20

Finding the Fourth Proportional to 10,077.60, 15,116.40 and 7,291.20

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Solution

The fourth proportional to 10,077.60, 15,116.40 and 7,291.20 is: 10,936.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,077.60 : 15,116.40 = 7,291.20 : x
  2. Step 2: Convert to fraction form
    10,077.60/15,116.40 = 7,291.20/x
  3. Step 3: Cross multiply
    10,077.60x = 15,116.40 × 7,291.20
  4. Step 4: Simplify right side
    10,077.60x = 110,216,695.68
  5. Step 5: Solve for x
    x = 110,216,695.68/10,077.60
  6. Step 6: Final answer
    x = 10,936.80

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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.