Home / 20,662.38-28,556.10-15,624.90

Finding the Fourth Proportional to 20,662.38, 28,556.10 and 15,624.90

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Solution

The fourth proportional to 20,662.38, 28,556.10 and 15,624.90 is: 21,594.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.38 : 28,556.10 = 15,624.90 : x
  2. Step 2: Convert to fraction form
    20,662.38/28,556.10 = 15,624.90/x
  3. Step 3: Cross multiply
    20,662.38x = 28,556.10 × 15,624.90
  4. Step 4: Simplify right side
    20,662.38x = 446,186,206.89
  5. Step 5: Solve for x
    x = 446,186,206.89/20,662.38
  6. Step 6: Final answer
    x = 21,594.13

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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.