Home / 10,387.80-14,335.26-5,672.28

Finding the Fourth Proportional to 10,387.80, 14,335.26 and 5,672.28

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Solution

The fourth proportional to 10,387.80, 14,335.26 and 5,672.28 is: 7,827.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.80 : 14,335.26 = 5,672.28 : x
  2. Step 2: Convert to fraction form
    10,387.80/14,335.26 = 5,672.28/x
  3. Step 3: Cross multiply
    10,387.80x = 14,335.26 × 5,672.28
  4. Step 4: Simplify right side
    10,387.80x = 81,313,608.59
  5. Step 5: Solve for x
    x = 81,313,608.59/10,387.80
  6. Step 6: Final answer
    x = 7,827.80

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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.