Home / 13,715.95-18,914.76-11,591.53

Finding the Fourth Proportional to 13,715.95, 18,914.76 and 11,591.53

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Solution

The fourth proportional to 13,715.95, 18,914.76 and 11,591.53 is: 15,985.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.95 : 18,914.76 = 11,591.53 : x
  2. Step 2: Convert to fraction form
    13,715.95/18,914.76 = 11,591.53/x
  3. Step 3: Cross multiply
    13,715.95x = 18,914.76 × 11,591.53
  4. Step 4: Simplify right side
    13,715.95x = 219,251,007.98
  5. Step 5: Solve for x
    x = 219,251,007.98/13,715.95
  6. Step 6: Final answer
    x = 15,985.11

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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.