Home / 19,756.92-29,643.39-8,657.76

Finding the Fourth Proportional to 19,756.92, 29,643.39 and 8,657.76

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Solution

The fourth proportional to 19,756.92, 29,643.39 and 8,657.76 is: 12,990.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,756.92 : 29,643.39 = 8,657.76 : x
  2. Step 2: Convert to fraction form
    19,756.92/29,643.39 = 8,657.76/x
  3. Step 3: Cross multiply
    19,756.92x = 29,643.39 × 8,657.76
  4. Step 4: Simplify right side
    19,756.92x = 256,645,356.21
  5. Step 5: Solve for x
    x = 256,645,356.21/19,756.92
  6. Step 6: Final answer
    x = 12,990.15

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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.