Home / 20,528-28,330.36-11,575.04

Finding the Fourth Proportional to 20,528, 28,330.36 and 11,575.04

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Solution

The fourth proportional to 20,528, 28,330.36 and 11,575.04 is: 15,974.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528 : 28,330.36 = 11,575.04 : x
  2. Step 2: Convert to fraction form
    20,528/28,330.36 = 11,575.04/x
  3. Step 3: Cross multiply
    20,528x = 28,330.36 × 11,575.04
  4. Step 4: Simplify right side
    20,528x = 327,925,050.21
  5. Step 5: Solve for x
    x = 327,925,050.21/20,528
  6. Step 6: Final answer
    x = 15,974.53

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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.