Home / 20,530.24-28,323.40-15,751.04

Finding the Fourth Proportional to 20,530.24, 28,323.40 and 15,751.04

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Solution

The fourth proportional to 20,530.24, 28,323.40 and 15,751.04 is: 21,730.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.24 : 28,323.40 = 15,751.04 : x
  2. Step 2: Convert to fraction form
    20,530.24/28,323.40 = 15,751.04/x
  3. Step 3: Cross multiply
    20,530.24x = 28,323.40 × 15,751.04
  4. Step 4: Simplify right side
    20,530.24x = 446,123,006.34
  5. Step 5: Solve for x
    x = 446,123,006.34/20,530.24
  6. Step 6: Final answer
    x = 21,730.04

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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.