Home / 19,172,642.40-28,744,966.80-7,807,240.80

Finding the Fourth Proportional to 19,172,642.40, 28,744,966.80 and 7,807,240.80

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Solution

The fourth proportional to 19,172,642.40, 28,744,966.80 and 7,807,240.80 is: 11,705,161.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,172,642.40 : 28,744,966.80 = 7,807,240.80 : x
  2. Step 2: Convert to fraction form
    19,172,642.40/28,744,966.80 = 7,807,240.80/x
  3. Step 3: Cross multiply
    19,172,642.40x = 28,744,966.80 × 7,807,240.80
  4. Step 4: Simplify right side
    19,172,642.40x = 224,418,877,595,605.44
  5. Step 5: Solve for x
    x = 224,418,877,595,605.44/19,172,642.40
  6. Step 6: Final answer
    x = 11,705,161.60

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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.