Home / 21,181,981.65-31,778,385.30-6,805,190.40

Finding the Fourth Proportional to 21,181,981.65, 31,778,385.30 and 6,805,190.40

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Solution

The fourth proportional to 21,181,981.65, 31,778,385.30 and 6,805,190.40 is: 10,209,524.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181,981.65 : 31,778,385.30 = 6,805,190.40 : x
  2. Step 2: Convert to fraction form
    21,181,981.65/31,778,385.30 = 6,805,190.40/x
  3. Step 3: Cross multiply
    21,181,981.65x = 31,778,385.30 × 6,805,190.40
  4. Step 4: Simplify right side
    21,181,981.65x = 216,257,962,571,061.12
  5. Step 5: Solve for x
    x = 216,257,962,571,061.12/21,181,981.65
  6. Step 6: Final answer
    x = 10,209,524.59

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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.