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Finding the Fourth Proportional to 15,144.95, 20,888.19 and 9,841.47

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Solution

The fourth proportional to 15,144.95, 20,888.19 and 9,841.47 is: 13,573.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,144.95 : 20,888.19 = 9,841.47 : x
  2. Step 2: Convert to fraction form
    15,144.95/20,888.19 = 9,841.47/x
  3. Step 3: Cross multiply
    15,144.95x = 20,888.19 × 9,841.47
  4. Step 4: Simplify right side
    15,144.95x = 205,570,495.24
  5. Step 5: Solve for x
    x = 205,570,495.24/15,144.95
  6. Step 6: Final answer
    x = 13,573.53

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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.