Home / 19,415.52-26,789.94-10,915.20

Finding the Fourth Proportional to 19,415.52, 26,789.94 and 10,915.20

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Solution

The fourth proportional to 19,415.52, 26,789.94 and 10,915.20 is: 15,061.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,415.52 : 26,789.94 = 10,915.20 : x
  2. Step 2: Convert to fraction form
    19,415.52/26,789.94 = 10,915.20/x
  3. Step 3: Cross multiply
    19,415.52x = 26,789.94 × 10,915.20
  4. Step 4: Simplify right side
    19,415.52x = 292,417,553.09
  5. Step 5: Solve for x
    x = 292,417,553.09/19,415.52
  6. Step 6: Final answer
    x = 15,061.02

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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.