Home / 15,326.10-21,147.85-8,611.40

Finding the Fourth Proportional to 15,326.10, 21,147.85 and 8,611.40

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Solution

The fourth proportional to 15,326.10, 21,147.85 and 8,611.40 is: 11,882.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,326.10 : 21,147.85 = 8,611.40 : x
  2. Step 2: Convert to fraction form
    15,326.10/21,147.85 = 8,611.40/x
  3. Step 3: Cross multiply
    15,326.10x = 21,147.85 × 8,611.40
  4. Step 4: Simplify right side
    15,326.10x = 182,112,595.49
  5. Step 5: Solve for x
    x = 182,112,595.49/15,326.10
  6. Step 6: Final answer
    x = 11,882.51

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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.