Home / 12,528.08-17,288.56-6,862.78

Finding the Fourth Proportional to 12,528.08, 17,288.56 and 6,862.78

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Solution

The fourth proportional to 12,528.08, 17,288.56 and 6,862.78 is: 9,470.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.08 : 17,288.56 = 6,862.78 : x
  2. Step 2: Convert to fraction form
    12,528.08/17,288.56 = 6,862.78/x
  3. Step 3: Cross multiply
    12,528.08x = 17,288.56 × 6,862.78
  4. Step 4: Simplify right side
    12,528.08x = 118,647,549.48
  5. Step 5: Solve for x
    x = 118,647,549.48/12,528.08
  6. Step 6: Final answer
    x = 9,470.53

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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.