Home / 10,812.72-14,922.59-6,780.19

Finding the Fourth Proportional to 10,812.72, 14,922.59 and 6,780.19

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Solution

The fourth proportional to 10,812.72, 14,922.59 and 6,780.19 is: 9,357.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.72 : 14,922.59 = 6,780.19 : x
  2. Step 2: Convert to fraction form
    10,812.72/14,922.59 = 6,780.19/x
  3. Step 3: Cross multiply
    10,812.72x = 14,922.59 × 6,780.19
  4. Step 4: Simplify right side
    10,812.72x = 101,177,995.49
  5. Step 5: Solve for x
    x = 101,177,995.49/10,812.72
  6. Step 6: Final answer
    x = 9,357.31

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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.