Home / 13,121,231.46-18,107,307.12-7,320,013.22

Finding the Fourth Proportional to 13,121,231.46, 18,107,307.12 and 7,320,013.22

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Solution

The fourth proportional to 13,121,231.46, 18,107,307.12 and 7,320,013.22 is: 10,101,622.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121,231.46 : 18,107,307.12 = 7,320,013.22 : x
  2. Step 2: Convert to fraction form
    13,121,231.46/18,107,307.12 = 7,320,013.22/x
  3. Step 3: Cross multiply
    13,121,231.46x = 18,107,307.12 × 7,320,013.22
  4. Step 4: Simplify right side
    13,121,231.46x = 132,545,727,497,000.12
  5. Step 5: Solve for x
    x = 132,545,727,497,000.12/13,121,231.46
  6. Step 6: Final answer
    x = 10,101,622.54

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1.5x scale

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.