Home / 10,987.40-15,165.48-6,793.28

Finding the Fourth Proportional to 10,987.40, 15,165.48 and 6,793.28

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Solution

The fourth proportional to 10,987.40, 15,165.48 and 6,793.28 is: 9,376.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.40 : 15,165.48 = 6,793.28 : x
  2. Step 2: Convert to fraction form
    10,987.40/15,165.48 = 6,793.28/x
  3. Step 3: Cross multiply
    10,987.40x = 15,165.48 × 6,793.28
  4. Step 4: Simplify right side
    10,987.40x = 103,023,351.97
  5. Step 5: Solve for x
    x = 103,023,351.97/10,987.40
  6. Step 6: Final answer
    x = 9,376.50

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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.