Home / 21,276,933.60-31,915,400.40-12,667,589.40

Finding the Fourth Proportional to 21,276,933.60, 31,915,400.40 and 12,667,589.40

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Solution

The fourth proportional to 21,276,933.60, 31,915,400.40 and 12,667,589.40 is: 19,001,384.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276,933.60 : 31,915,400.40 = 12,667,589.40 : x
  2. Step 2: Convert to fraction form
    21,276,933.60/31,915,400.40 = 12,667,589.40/x
  3. Step 3: Cross multiply
    21,276,933.60x = 31,915,400.40 × 12,667,589.40
  4. Step 4: Simplify right side
    21,276,933.60x = 404,291,187,803,795.75
  5. Step 5: Solve for x
    x = 404,291,187,803,795.75/21,276,933.60
  6. Step 6: Final answer
    x = 19,001,384.10

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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.