Home / 15,391,837.40-21,240,984.10-8,423,120.45

Finding the Fourth Proportional to 15,391,837.40, 21,240,984.10 and 8,423,120.45

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Solution

The fourth proportional to 15,391,837.40, 21,240,984.10 and 8,423,120.45 is: 11,624,042.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,391,837.40 : 21,240,984.10 = 8,423,120.45 : x
  2. Step 2: Convert to fraction form
    15,391,837.40/21,240,984.10 = 8,423,120.45/x
  3. Step 3: Cross multiply
    15,391,837.40x = 21,240,984.10 × 8,423,120.45
  4. Step 4: Simplify right side
    15,391,837.40x = 178,915,367,550,834.84
  5. Step 5: Solve for x
    x = 178,915,367,550,834.84/15,391,837.40
  6. Step 6: Final answer
    x = 11,624,042.21

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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.