Home / 10,983.40-15,159.96-6,789.28

Finding the Fourth Proportional to 10,983.40, 15,159.96 and 6,789.28

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Solution

The fourth proportional to 10,983.40, 15,159.96 and 6,789.28 is: 9,370.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,983.40 : 15,159.96 = 6,789.28 : x
  2. Step 2: Convert to fraction form
    10,983.40/15,159.96 = 6,789.28/x
  3. Step 3: Cross multiply
    10,983.40x = 15,159.96 × 6,789.28
  4. Step 4: Simplify right side
    10,983.40x = 102,925,213.23
  5. Step 5: Solve for x
    x = 102,925,213.23/10,983.40
  6. Step 6: Final answer
    x = 9,370.98

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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.