Home / 15,454.88-21,327.74-8,381.31

Finding the Fourth Proportional to 15,454.88, 21,327.74 and 8,381.31

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Solution

The fourth proportional to 15,454.88, 21,327.74 and 8,381.31 is: 11,566.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.88 : 21,327.74 = 8,381.31 : x
  2. Step 2: Convert to fraction form
    15,454.88/21,327.74 = 8,381.31/x
  3. Step 3: Cross multiply
    15,454.88x = 21,327.74 × 8,381.31
  4. Step 4: Simplify right side
    15,454.88x = 178,754,358.63
  5. Step 5: Solve for x
    x = 178,754,358.63/15,454.88
  6. Step 6: Final answer
    x = 11,566.21

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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.