Home / 15,381.51-21,227.19-8,575.98

Finding the Fourth Proportional to 15,381.51, 21,227.19 and 8,575.98

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Solution

The fourth proportional to 15,381.51, 21,227.19 and 8,575.98 is: 11,835.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381.51 : 21,227.19 = 8,575.98 : x
  2. Step 2: Convert to fraction form
    15,381.51/21,227.19 = 8,575.98/x
  3. Step 3: Cross multiply
    15,381.51x = 21,227.19 × 8,575.98
  4. Step 4: Simplify right side
    15,381.51x = 182,043,956.90
  5. Step 5: Solve for x
    x = 182,043,956.90/15,381.51
  6. Step 6: Final answer
    x = 11,835.25

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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.