Home / 12,395.45-17,112.05-7,862.75

Finding the Fourth Proportional to 12,395.45, 17,112.05 and 7,862.75

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Solution

The fourth proportional to 12,395.45, 17,112.05 and 7,862.75 is: 10,854.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,395.45 : 17,112.05 = 7,862.75 : x
  2. Step 2: Convert to fraction form
    12,395.45/17,112.05 = 7,862.75/x
  3. Step 3: Cross multiply
    12,395.45x = 17,112.05 × 7,862.75
  4. Step 4: Simplify right side
    12,395.45x = 134,547,646.26
  5. Step 5: Solve for x
    x = 134,547,646.26/12,395.45
  6. Step 6: Final answer
    x = 10,854.60

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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.