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Finding the Fourth Proportional to 15,752.11, 21,741.06 and 9,042.28

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Solution

The fourth proportional to 15,752.11, 21,741.06 and 9,042.28 is: 12,480.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,752.11 : 21,741.06 = 9,042.28 : x
  2. Step 2: Convert to fraction form
    15,752.11/21,741.06 = 9,042.28/x
  3. Step 3: Cross multiply
    15,752.11x = 21,741.06 × 9,042.28
  4. Step 4: Simplify right side
    15,752.11x = 196,588,643.31
  5. Step 5: Solve for x
    x = 196,588,643.31/15,752.11
  6. Step 6: Final answer
    x = 12,480.15

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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.