Home / 15,313,678.40-21,131,924-8,437,775.68

Finding the Fourth Proportional to 15,313,678.40, 21,131,924 and 8,437,775.68

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Solution

The fourth proportional to 15,313,678.40, 21,131,924 and 8,437,775.68 is: 11,643,605.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,313,678.40 : 21,131,924 = 8,437,775.68 : x
  2. Step 2: Convert to fraction form
    15,313,678.40/21,131,924 = 8,437,775.68/x
  3. Step 3: Cross multiply
    15,313,678.40x = 21,131,924 × 8,437,775.68
  4. Step 4: Simplify right side
    15,313,678.40x = 178,306,434,398,808.31
  5. Step 5: Solve for x
    x = 178,306,434,398,808.31/15,313,678.40
  6. Step 6: Final answer
    x = 11,643,605.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.