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Finding the Fourth Proportional to 15,085.42, 20,818.42 and 11,301.90

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Solution

The fourth proportional to 15,085.42, 20,818.42 and 11,301.90 is: 15,597.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,085.42 : 20,818.42 = 11,301.90 : x
  2. Step 2: Convert to fraction form
    15,085.42/20,818.42 = 11,301.90/x
  3. Step 3: Cross multiply
    15,085.42x = 20,818.42 × 11,301.90
  4. Step 4: Simplify right side
    15,085.42x = 235,287,701.00
  5. Step 5: Solve for x
    x = 235,287,701.00/15,085.42
  6. Step 6: Final answer
    x = 15,597.03

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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.