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Finding the Fourth Proportional to 15,888.68, 21,927.36 and 9,175.52

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Solution

The fourth proportional to 15,888.68, 21,927.36 and 9,175.52 is: 12,662.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,888.68 : 21,927.36 = 9,175.52 : x
  2. Step 2: Convert to fraction form
    15,888.68/21,927.36 = 9,175.52/x
  3. Step 3: Cross multiply
    15,888.68x = 21,927.36 × 9,175.52
  4. Step 4: Simplify right side
    15,888.68x = 201,194,930.23
  5. Step 5: Solve for x
    x = 201,194,930.23/15,888.68
  6. Step 6: Final answer
    x = 12,662.78

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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.