Home / 21,301,397.40-31,934,600.10-9,180,168.60

Finding the Fourth Proportional to 21,301,397.40, 31,934,600.10 and 9,180,168.60

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Solution

The fourth proportional to 21,301,397.40, 31,934,600.10 and 9,180,168.60 is: 13,762,712.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,301,397.40 : 31,934,600.10 = 9,180,168.60 : x
  2. Step 2: Convert to fraction form
    21,301,397.40/31,934,600.10 = 9,180,168.60/x
  3. Step 3: Cross multiply
    21,301,397.40x = 31,934,600.10 × 9,180,168.60
  4. Step 4: Simplify right side
    21,301,397.40x = 293,165,013,091,576.88
  5. Step 5: Solve for x
    x = 293,165,013,091,576.88/21,301,397.40
  6. Step 6: Final answer
    x = 13,762,712.73

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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.