Home / 20,849.36-28,772.10-11,417.90

Finding the Fourth Proportional to 20,849.36, 28,772.10 and 11,417.90

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Solution

The fourth proportional to 20,849.36, 28,772.10 and 11,417.90 is: 15,756.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.36 : 28,772.10 = 11,417.90 : x
  2. Step 2: Convert to fraction form
    20,849.36/28,772.10 = 11,417.90/x
  3. Step 3: Cross multiply
    20,849.36x = 28,772.10 × 11,417.90
  4. Step 4: Simplify right side
    20,849.36x = 328,516,816.73
  5. Step 5: Solve for x
    x = 328,516,816.73/20,849.36
  6. Step 6: Final answer
    x = 15,756.69

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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.