Home / 9,981.80-14,976.30-4,140.20

Finding the Fourth Proportional to 9,981.80, 14,976.30 and 4,140.20

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Solution

The fourth proportional to 9,981.80, 14,976.30 and 4,140.20 is: 6,211.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,981.80 : 14,976.30 = 4,140.20 : x
  2. Step 2: Convert to fraction form
    9,981.80/14,976.30 = 4,140.20/x
  3. Step 3: Cross multiply
    9,981.80x = 14,976.30 × 4,140.20
  4. Step 4: Simplify right side
    9,981.80x = 62,004,877.26
  5. Step 5: Solve for x
    x = 62,004,877.26/9,981.80
  6. Step 6: Final answer
    x = 6,211.79

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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.