Home / 10,686.40-14,754.96-6,911.70

Finding the Fourth Proportional to 10,686.40, 14,754.96 and 6,911.70

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Solution

The fourth proportional to 10,686.40, 14,754.96 and 6,911.70 is: 9,543.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,686.40 : 14,754.96 = 6,911.70 : x
  2. Step 2: Convert to fraction form
    10,686.40/14,754.96 = 6,911.70/x
  3. Step 3: Cross multiply
    10,686.40x = 14,754.96 × 6,911.70
  4. Step 4: Simplify right side
    10,686.40x = 101,981,801.70
  5. Step 5: Solve for x
    x = 101,981,801.70/10,686.40
  6. Step 6: Final answer
    x = 9,543.14

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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.