Home / 13,122,001.70-18,108,373.70-7,320,784.64

Finding the Fourth Proportional to 13,122,001.70, 18,108,373.70 and 7,320,784.64

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Solution

The fourth proportional to 13,122,001.70, 18,108,373.70 and 7,320,784.64 is: 10,102,689.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122,001.70 : 18,108,373.70 = 7,320,784.64 : x
  2. Step 2: Convert to fraction form
    13,122,001.70/18,108,373.70 = 7,320,784.64/x
  3. Step 3: Cross multiply
    13,122,001.70x = 18,108,373.70 × 7,320,784.64
  4. Step 4: Simplify right side
    13,122,001.70x = 132,567,504,038,339.95
  5. Step 5: Solve for x
    x = 132,567,504,038,339.95/13,122,001.70
  6. Step 6: Final answer
    x = 10,102,689.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.