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Finding the Fourth Proportional to 19,165.44, 28,780.86 and 10,417.44

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Solution

The fourth proportional to 19,165.44, 28,780.86 and 10,417.44 is: 15,643.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,165.44 : 28,780.86 = 10,417.44 : x
  2. Step 2: Convert to fraction form
    19,165.44/28,780.86 = 10,417.44/x
  3. Step 3: Cross multiply
    19,165.44x = 28,780.86 × 10,417.44
  4. Step 4: Simplify right side
    19,165.44x = 299,822,882.20
  5. Step 5: Solve for x
    x = 299,822,882.20/19,165.44
  6. Step 6: Final answer
    x = 15,643.93

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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.