Home / 12,988.60-17,924.46-7,399.48

Finding the Fourth Proportional to 12,988.60, 17,924.46 and 7,399.48

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Solution

The fourth proportional to 12,988.60, 17,924.46 and 7,399.48 is: 10,211.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988.60 : 17,924.46 = 7,399.48 : x
  2. Step 2: Convert to fraction form
    12,988.60/17,924.46 = 7,399.48/x
  3. Step 3: Cross multiply
    12,988.60x = 17,924.46 × 7,399.48
  4. Step 4: Simplify right side
    12,988.60x = 132,631,683.28
  5. Step 5: Solve for x
    x = 132,631,683.28/12,988.60
  6. Step 6: Final answer
    x = 10,211.39

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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.