Home / 21,292,212.30-31,938,318.45-12,306,266.70

Finding the Fourth Proportional to 21,292,212.30, 31,938,318.45 and 12,306,266.70

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Solution

The fourth proportional to 21,292,212.30, 31,938,318.45 and 12,306,266.70 is: 18,459,400.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292,212.30 : 31,938,318.45 = 12,306,266.70 : x
  2. Step 2: Convert to fraction form
    21,292,212.30/31,938,318.45 = 12,306,266.70/x
  3. Step 3: Cross multiply
    21,292,212.30x = 31,938,318.45 × 12,306,266.70
  4. Step 4: Simplify right side
    21,292,212.30x = 393,041,464,795,230.56
  5. Step 5: Solve for x
    x = 393,041,464,795,230.56/21,292,212.30
  6. Step 6: Final answer
    x = 18,459,400.05

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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.