Home / 19,689.86-29,536.28-5,649.78

Finding the Fourth Proportional to 19,689.86, 29,536.28 and 5,649.78

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Solution

The fourth proportional to 19,689.86, 29,536.28 and 5,649.78 is: 8,475.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,689.86 : 29,536.28 = 5,649.78 : x
  2. Step 2: Convert to fraction form
    19,689.86/29,536.28 = 5,649.78/x
  3. Step 3: Cross multiply
    19,689.86x = 29,536.28 × 5,649.78
  4. Step 4: Simplify right side
    19,689.86x = 166,873,484.02
  5. Step 5: Solve for x
    x = 166,873,484.02/19,689.86
  6. Step 6: Final answer
    x = 8,475.10

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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.