Home / 12,483.12-18,711.54-4,983.72

Finding the Fourth Proportional to 12,483.12, 18,711.54 and 4,983.72

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Solution

The fourth proportional to 12,483.12, 18,711.54 and 4,983.72 is: 7,470.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.12 : 18,711.54 = 4,983.72 : x
  2. Step 2: Convert to fraction form
    12,483.12/18,711.54 = 4,983.72/x
  3. Step 3: Cross multiply
    12,483.12x = 18,711.54 × 4,983.72
  4. Step 4: Simplify right side
    12,483.12x = 93,253,076.13
  5. Step 5: Solve for x
    x = 93,253,076.13/12,483.12
  6. Step 6: Final answer
    x = 7,470.33

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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.