Home / 12,310.80-18,470.24-4,911.18

Finding the Fourth Proportional to 12,310.80, 18,470.24 and 4,911.18

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Solution

The fourth proportional to 12,310.80, 18,470.24 and 4,911.18 is: 7,368.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,310.80 : 18,470.24 = 4,911.18 : x
  2. Step 2: Convert to fraction form
    12,310.80/18,470.24 = 4,911.18/x
  3. Step 3: Cross multiply
    12,310.80x = 18,470.24 × 4,911.18
  4. Step 4: Simplify right side
    12,310.80x = 90,710,673.28
  5. Step 5: Solve for x
    x = 90,710,673.28/12,310.80
  6. Step 6: Final answer
    x = 7,368.38

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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.