Home / 11,538.40-15,914.28-9,947.84

Finding the Fourth Proportional to 11,538.40, 15,914.28 and 9,947.84

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Solution

The fourth proportional to 11,538.40, 15,914.28 and 9,947.84 is: 13,720.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,538.40 : 15,914.28 = 9,947.84 : x
  2. Step 2: Convert to fraction form
    11,538.40/15,914.28 = 9,947.84/x
  3. Step 3: Cross multiply
    11,538.40x = 15,914.28 × 9,947.84
  4. Step 4: Simplify right side
    11,538.40x = 158,312,711.16
  5. Step 5: Solve for x
    x = 158,312,711.16/11,538.40
  6. Step 6: Final answer
    x = 13,720.51

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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.