Home / 20,445.35-28,211.13-11,370.47

Finding the Fourth Proportional to 20,445.35, 28,211.13 and 11,370.47

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Solution

The fourth proportional to 20,445.35, 28,211.13 and 11,370.47 is: 15,689.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,445.35 : 28,211.13 = 11,370.47 : x
  2. Step 2: Convert to fraction form
    20,445.35/28,211.13 = 11,370.47/x
  3. Step 3: Cross multiply
    20,445.35x = 28,211.13 × 11,370.47
  4. Step 4: Simplify right side
    20,445.35x = 320,773,666.28
  5. Step 5: Solve for x
    x = 320,773,666.28/20,445.35
  6. Step 6: Final answer
    x = 15,689.33

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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.