Home / 21,706,919.20-32,513,139.60-13,172,370.40

Finding the Fourth Proportional to 21,706,919.20, 32,513,139.60 and 13,172,370.40

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Solution

The fourth proportional to 21,706,919.20, 32,513,139.60 and 13,172,370.40 is: 19,729,889.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,706,919.20 : 32,513,139.60 = 13,172,370.40 : x
  2. Step 2: Convert to fraction form
    21,706,919.20/32,513,139.60 = 13,172,370.40/x
  3. Step 3: Cross multiply
    21,706,919.20x = 32,513,139.60 × 13,172,370.40
  4. Step 4: Simplify right side
    21,706,919.20x = 428,275,117,678,107.88
  5. Step 5: Solve for x
    x = 428,275,117,678,107.88/21,706,919.20
  6. Step 6: Final answer
    x = 19,729,889.52

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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.