Home / 13,178,619.20-18,186,354.28-7,377,448.61

Finding the Fourth Proportional to 13,178,619.20, 18,186,354.28 and 7,377,448.61

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Solution

The fourth proportional to 13,178,619.20, 18,186,354.28 and 7,377,448.61 is: 10,180,800.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178,619.20 : 18,186,354.28 = 7,377,448.61 : x
  2. Step 2: Convert to fraction form
    13,178,619.20/18,186,354.28 = 7,377,448.61/x
  3. Step 3: Cross multiply
    13,178,619.20x = 18,186,354.28 × 7,377,448.61
  4. Step 4: Simplify right side
    13,178,619.20x = 134,168,894,103,953.56
  5. Step 5: Solve for x
    x = 134,168,894,103,953.56/13,178,619.20
  6. Step 6: Final answer
    x = 10,180,800.59

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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.