Home / 20,347.04-28,013.64-15,865.04

Finding the Fourth Proportional to 20,347.04, 28,013.64 and 15,865.04

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Solution

The fourth proportional to 20,347.04, 28,013.64 and 15,865.04 is: 21,842.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347.04 : 28,013.64 = 15,865.04 : x
  2. Step 2: Convert to fraction form
    20,347.04/28,013.64 = 15,865.04/x
  3. Step 3: Cross multiply
    20,347.04x = 28,013.64 × 15,865.04
  4. Step 4: Simplify right side
    20,347.04x = 444,437,519.15
  5. Step 5: Solve for x
    x = 444,437,519.15/20,347.04
  6. Step 6: Final answer
    x = 21,842.86

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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.