Home / 21,004,090.10-31,443,149.55-12,480,038.90

Finding the Fourth Proportional to 21,004,090.10, 31,443,149.55 and 12,480,038.90

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Solution

The fourth proportional to 21,004,090.10, 31,443,149.55 and 12,480,038.90 is: 18,682,634.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004,090.10 : 31,443,149.55 = 12,480,038.90 : x
  2. Step 2: Convert to fraction form
    21,004,090.10/31,443,149.55 = 12,480,038.90/x
  3. Step 3: Cross multiply
    21,004,090.10x = 31,443,149.55 × 12,480,038.90
  4. Step 4: Simplify right side
    21,004,090.10x = 392,411,729,522,517.50
  5. Step 5: Solve for x
    x = 392,411,729,522,517.50/21,004,090.10
  6. Step 6: Final answer
    x = 18,682,634.08

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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.