Home / 13,288,972.40-19,932,421.80-5,200,377.20

Finding the Fourth Proportional to 13,288,972.40, 19,932,421.80 and 5,200,377.20

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Solution

The fourth proportional to 13,288,972.40, 19,932,421.80 and 5,200,377.20 is: 7,800,160.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288,972.40 : 19,932,421.80 = 5,200,377.20 : x
  2. Step 2: Convert to fraction form
    13,288,972.40/19,932,421.80 = 5,200,377.20/x
  3. Step 3: Cross multiply
    13,288,972.40x = 19,932,421.80 × 5,200,377.20
  4. Step 4: Simplify right side
    13,288,972.40x = 103,656,111,869,502.97
  5. Step 5: Solve for x
    x = 103,656,111,869,502.97/13,288,972.40
  6. Step 6: Final answer
    x = 7,800,160.07

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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.