Home / 10,860.78-14,989.50-6,882.28

Finding the Fourth Proportional to 10,860.78, 14,989.50 and 6,882.28

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Solution

The fourth proportional to 10,860.78, 14,989.50 and 6,882.28 is: 9,498.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,860.78 : 14,989.50 = 6,882.28 : x
  2. Step 2: Convert to fraction form
    10,860.78/14,989.50 = 6,882.28/x
  3. Step 3: Cross multiply
    10,860.78x = 14,989.50 × 6,882.28
  4. Step 4: Simplify right side
    10,860.78x = 103,161,936.06
  5. Step 5: Solve for x
    x = 103,161,936.06/10,860.78
  6. Step 6: Final answer
    x = 9,498.58

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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.