Home / 20,775,005.40-31,164,279.30-5,424,331.80

Finding the Fourth Proportional to 20,775,005.40, 31,164,279.30 and 5,424,331.80

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Solution

The fourth proportional to 20,775,005.40, 31,164,279.30 and 5,424,331.80 is: 8,136,960.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775,005.40 : 31,164,279.30 = 5,424,331.80 : x
  2. Step 2: Convert to fraction form
    20,775,005.40/31,164,279.30 = 5,424,331.80/x
  3. Step 3: Cross multiply
    20,775,005.40x = 31,164,279.30 × 5,424,331.80
  4. Step 4: Simplify right side
    20,775,005.40x = 169,045,391,231,071.75
  5. Step 5: Solve for x
    x = 169,045,391,231,071.75/20,775,005.40
  6. Step 6: Final answer
    x = 8,136,960.16

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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.