Home / 12,458,428.30-18,687,642.45-12,290,466.70

Finding the Fourth Proportional to 12,458,428.30, 18,687,642.45 and 12,290,466.70

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Solution

The fourth proportional to 12,458,428.30, 18,687,642.45 and 12,290,466.70 is: 18,435,700.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458,428.30 : 18,687,642.45 = 12,290,466.70 : x
  2. Step 2: Convert to fraction form
    12,458,428.30/18,687,642.45 = 12,290,466.70/x
  3. Step 3: Cross multiply
    12,458,428.30x = 18,687,642.45 × 12,290,466.70
  4. Step 4: Simplify right side
    12,458,428.30x = 229,679,847,233,231.41
  5. Step 5: Solve for x
    x = 229,679,847,233,231.41/12,458,428.30
  6. Step 6: Final answer
    x = 18,435,700.05

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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.