Home / 20,487,776.40-30,731,664.60-10,284,109.20

Finding the Fourth Proportional to 20,487,776.40, 30,731,664.60 and 10,284,109.20

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Solution

The fourth proportional to 20,487,776.40, 30,731,664.60 and 10,284,109.20 is: 15,426,163.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487,776.40 : 30,731,664.60 = 10,284,109.20 : x
  2. Step 2: Convert to fraction form
    20,487,776.40/30,731,664.60 = 10,284,109.20/x
  3. Step 3: Cross multiply
    20,487,776.40x = 30,731,664.60 × 10,284,109.20
  4. Step 4: Simplify right side
    20,487,776.40x = 316,047,794,644,174.31
  5. Step 5: Solve for x
    x = 316,047,794,644,174.31/20,487,776.40
  6. Step 6: Final answer
    x = 15,426,163.80

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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.