Home / 10,339.20-14,265.60-6,988.80

Finding the Fourth Proportional to 10,339.20, 14,265.60 and 6,988.80

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Solution

The fourth proportional to 10,339.20, 14,265.60 and 6,988.80 is: 9,642.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,339.20 : 14,265.60 = 6,988.80 : x
  2. Step 2: Convert to fraction form
    10,339.20/14,265.60 = 6,988.80/x
  3. Step 3: Cross multiply
    10,339.20x = 14,265.60 × 6,988.80
  4. Step 4: Simplify right side
    10,339.20x = 99,699,425.28
  5. Step 5: Solve for x
    x = 99,699,425.28/10,339.20
  6. Step 6: Final answer
    x = 9,642.86

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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.