Home / 15,853.17-21,877.33-9,138.76

Finding the Fourth Proportional to 15,853.17, 21,877.33 and 9,138.76

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Solution

The fourth proportional to 15,853.17, 21,877.33 and 9,138.76 is: 12,611.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,853.17 : 21,877.33 = 9,138.76 : x
  2. Step 2: Convert to fraction form
    15,853.17/21,877.33 = 9,138.76/x
  3. Step 3: Cross multiply
    15,853.17x = 21,877.33 × 9,138.76
  4. Step 4: Simplify right side
    15,853.17x = 199,931,590.77
  5. Step 5: Solve for x
    x = 199,931,590.77/15,853.17
  6. Step 6: Final answer
    x = 12,611.46

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.