Home / 15,151.52-20,896.80-12,475.28

Finding the Fourth Proportional to 15,151.52, 20,896.80 and 12,475.28

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Solution

The fourth proportional to 15,151.52, 20,896.80 and 12,475.28 is: 17,205.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,151.52 : 20,896.80 = 12,475.28 : x
  2. Step 2: Convert to fraction form
    15,151.52/20,896.80 = 12,475.28/x
  3. Step 3: Cross multiply
    15,151.52x = 20,896.80 × 12,475.28
  4. Step 4: Simplify right side
    15,151.52x = 260,693,431.10
  5. Step 5: Solve for x
    x = 260,693,431.10/15,151.52
  6. Step 6: Final answer
    x = 17,205.76

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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.