Home / 13,759.44-18,988.13-7,471.82

Finding the Fourth Proportional to 13,759.44, 18,988.13 and 7,471.82

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Solution

The fourth proportional to 13,759.44, 18,988.13 and 7,471.82 is: 10,311.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,759.44 : 18,988.13 = 7,471.82 : x
  2. Step 2: Convert to fraction form
    13,759.44/18,988.13 = 7,471.82/x
  3. Step 3: Cross multiply
    13,759.44x = 18,988.13 × 7,471.82
  4. Step 4: Simplify right side
    13,759.44x = 141,875,813.24
  5. Step 5: Solve for x
    x = 141,875,813.24/13,759.44
  6. Step 6: Final answer
    x = 10,311.16

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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.