Home / 9,930.60-13,703.31-5,680.80

Finding the Fourth Proportional to 9,930.60, 13,703.31 and 5,680.80

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Solution

The fourth proportional to 9,930.60, 13,703.31 and 5,680.80 is: 7,838.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,930.60 : 13,703.31 = 5,680.80 : x
  2. Step 2: Convert to fraction form
    9,930.60/13,703.31 = 5,680.80/x
  3. Step 3: Cross multiply
    9,930.60x = 13,703.31 × 5,680.80
  4. Step 4: Simplify right side
    9,930.60x = 77,845,763.45
  5. Step 5: Solve for x
    x = 77,845,763.45/9,930.60
  6. Step 6: Final answer
    x = 7,838.98

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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.