Home / 20,868.50-28,798.36-11,437.04

Finding the Fourth Proportional to 20,868.50, 28,798.36 and 11,437.04

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Solution

The fourth proportional to 20,868.50, 28,798.36 and 11,437.04 is: 15,783.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.50 : 28,798.36 = 11,437.04 : x
  2. Step 2: Convert to fraction form
    20,868.50/28,798.36 = 11,437.04/x
  3. Step 3: Cross multiply
    20,868.50x = 28,798.36 × 11,437.04
  4. Step 4: Simplify right side
    20,868.50x = 329,367,822.67
  5. Step 5: Solve for x
    x = 329,367,822.67/20,868.50
  6. Step 6: Final answer
    x = 15,783.02

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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.