Home / 15,156.82-20,899.69-10,377.55

Finding the Fourth Proportional to 15,156.82, 20,899.69 and 10,377.55

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Solution

The fourth proportional to 15,156.82, 20,899.69 and 10,377.55 is: 14,309.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,156.82 : 20,899.69 = 10,377.55 : x
  2. Step 2: Convert to fraction form
    15,156.82/20,899.69 = 10,377.55/x
  3. Step 3: Cross multiply
    15,156.82x = 20,899.69 × 10,377.55
  4. Step 4: Simplify right side
    15,156.82x = 216,887,577.96
  5. Step 5: Solve for x
    x = 216,887,577.96/15,156.82
  6. Step 6: Final answer
    x = 14,309.57

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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.