Home / 12,518.95-18,780.86-3,753.13

Finding the Fourth Proportional to 12,518.95, 18,780.86 and 3,753.13

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Solution

The fourth proportional to 12,518.95, 18,780.86 and 3,753.13 is: 5,630.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518.95 : 18,780.86 = 3,753.13 : x
  2. Step 2: Convert to fraction form
    12,518.95/18,780.86 = 3,753.13/x
  3. Step 3: Cross multiply
    12,518.95x = 18,780.86 × 3,753.13
  4. Step 4: Simplify right side
    12,518.95x = 70,487,009.09
  5. Step 5: Solve for x
    x = 70,487,009.09/12,518.95
  6. Step 6: Final answer
    x = 5,630.43

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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.