Home / 18,381,920.80-25,367,738.88-10,122,341.20

Finding the Fourth Proportional to 18,381,920.80, 25,367,738.88 and 10,122,341.20

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Solution

The fourth proportional to 18,381,920.80, 25,367,738.88 and 10,122,341.20 is: 13,969,209.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381,920.80 : 25,367,738.88 = 10,122,341.20 : x
  2. Step 2: Convert to fraction form
    18,381,920.80/25,367,738.88 = 10,122,341.20/x
  3. Step 3: Cross multiply
    18,381,920.80x = 25,367,738.88 × 10,122,341.20
  4. Step 4: Simplify right side
    18,381,920.80x = 256,780,908,415,865.81
  5. Step 5: Solve for x
    x = 256,780,908,415,865.81/18,381,920.80
  6. Step 6: Final answer
    x = 13,969,209.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.