Home / 13,445.52-20,140.53-7,881.98

Finding the Fourth Proportional to 13,445.52, 20,140.53 and 7,881.98

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Solution

The fourth proportional to 13,445.52, 20,140.53 and 7,881.98 is: 11,806.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.52 : 20,140.53 = 7,881.98 : x
  2. Step 2: Convert to fraction form
    13,445.52/20,140.53 = 7,881.98/x
  3. Step 3: Cross multiply
    13,445.52x = 20,140.53 × 7,881.98
  4. Step 4: Simplify right side
    13,445.52x = 158,747,153.95
  5. Step 5: Solve for x
    x = 158,747,153.95/13,445.52
  6. Step 6: Final answer
    x = 11,806.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.