Home / 12,116.25-16,720.70-7,403.13

Finding the Fourth Proportional to 12,116.25, 16,720.70 and 7,403.13

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Solution

The fourth proportional to 12,116.25, 16,720.70 and 7,403.13 is: 10,216.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,116.25 : 16,720.70 = 7,403.13 : x
  2. Step 2: Convert to fraction form
    12,116.25/16,720.70 = 7,403.13/x
  3. Step 3: Cross multiply
    12,116.25x = 16,720.70 × 7,403.13
  4. Step 4: Simplify right side
    12,116.25x = 123,785,478.78
  5. Step 5: Solve for x
    x = 123,785,478.78/12,116.25
  6. Step 6: Final answer
    x = 10,216.48

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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.