Home / 15,340.56-21,180.43-11,307.87

Finding the Fourth Proportional to 15,340.56, 21,180.43 and 11,307.87

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Solution

The fourth proportional to 15,340.56, 21,180.43 and 11,307.87 is: 15,612.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,340.56 : 21,180.43 = 11,307.87 : x
  2. Step 2: Convert to fraction form
    15,340.56/21,180.43 = 11,307.87/x
  3. Step 3: Cross multiply
    15,340.56x = 21,180.43 × 11,307.87
  4. Step 4: Simplify right side
    15,340.56x = 239,505,548.98
  5. Step 5: Solve for x
    x = 239,505,548.98/15,340.56
  6. Step 6: Final answer
    x = 15,612.57

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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.