Home / 12,584.80-18,844.80-9,971.20

Finding the Fourth Proportional to 12,584.80, 18,844.80 and 9,971.20

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Solution

The fourth proportional to 12,584.80, 18,844.80 and 9,971.20 is: 14,931.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,584.80 : 18,844.80 = 9,971.20 : x
  2. Step 2: Convert to fraction form
    12,584.80/18,844.80 = 9,971.20/x
  3. Step 3: Cross multiply
    12,584.80x = 18,844.80 × 9,971.20
  4. Step 4: Simplify right side
    12,584.80x = 187,905,269.76
  5. Step 5: Solve for x
    x = 187,905,269.76/12,584.80
  6. Step 6: Final answer
    x = 14,931.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.