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Finding the Fourth Proportional to 15,486.77, 21,375.15 and 10,182.08

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Solution

The fourth proportional to 15,486.77, 21,375.15 and 10,182.08 is: 14,053.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,486.77 : 21,375.15 = 10,182.08 : x
  2. Step 2: Convert to fraction form
    15,486.77/21,375.15 = 10,182.08/x
  3. Step 3: Cross multiply
    15,486.77x = 21,375.15 × 10,182.08
  4. Step 4: Simplify right side
    15,486.77x = 217,643,436.40
  5. Step 5: Solve for x
    x = 217,643,436.40/15,486.77
  6. Step 6: Final answer
    x = 14,053.51

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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.