Home / 20,564.03-28,378.45-11,132.59

Finding the Fourth Proportional to 20,564.03, 28,378.45 and 11,132.59

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Solution

The fourth proportional to 20,564.03, 28,378.45 and 11,132.59 is: 15,363.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,564.03 : 28,378.45 = 11,132.59 : x
  2. Step 2: Convert to fraction form
    20,564.03/28,378.45 = 11,132.59/x
  3. Step 3: Cross multiply
    20,564.03x = 28,378.45 × 11,132.59
  4. Step 4: Simplify right side
    20,564.03x = 315,925,648.69
  5. Step 5: Solve for x
    x = 315,925,648.69/20,564.03
  6. Step 6: Final answer
    x = 15,363.02

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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.