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Finding the Fourth Proportional to 15,889.04, 21,927.86 and 9,175.88

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Solution

The fourth proportional to 15,889.04, 21,927.86 and 9,175.88 is: 12,663.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,889.04 : 21,927.86 = 9,175.88 : x
  2. Step 2: Convert to fraction form
    15,889.04/21,927.86 = 9,175.88/x
  3. Step 3: Cross multiply
    15,889.04x = 21,927.86 × 9,175.88
  4. Step 4: Simplify right side
    15,889.04x = 201,207,412.02
  5. Step 5: Solve for x
    x = 201,207,412.02/15,889.04
  6. Step 6: Final answer
    x = 12,663.28

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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.