Home / 40,678.13-61,018.28-12,976.13

Finding the Fourth Proportional to 40,678.13, 61,018.28 and 12,976.13

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Solution

The fourth proportional to 40,678.13, 61,018.28 and 12,976.13 is: 19,464.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,678.13 : 61,018.28 = 12,976.13 : x
  2. Step 2: Convert to fraction form
    40,678.13/61,018.28 = 12,976.13/x
  3. Step 3: Cross multiply
    40,678.13x = 61,018.28 × 12,976.13
  4. Step 4: Simplify right side
    40,678.13x = 791,780,763.68
  5. Step 5: Solve for x
    x = 791,780,763.68/40,678.13
  6. Step 6: Final answer
    x = 19,464.53

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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.