Home / 12,357,828.20-18,536,742.30-7,306,538.60

Finding the Fourth Proportional to 12,357,828.20, 18,536,742.30 and 7,306,538.60

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Solution

The fourth proportional to 12,357,828.20, 18,536,742.30 and 7,306,538.60 is: 10,959,807.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,357,828.20 : 18,536,742.30 = 7,306,538.60 : x
  2. Step 2: Convert to fraction form
    12,357,828.20/18,536,742.30 = 7,306,538.60/x
  3. Step 3: Cross multiply
    12,357,828.20x = 18,536,742.30 × 7,306,538.60
  4. Step 4: Simplify right side
    12,357,828.20x = 135,439,423,133,202.78
  5. Step 5: Solve for x
    x = 135,439,423,133,202.78/12,357,828.20
  6. Step 6: Final answer
    x = 10,959,807.90

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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.