Home / 13,121,240.76-18,107,319.96-7,320,022.38

Finding the Fourth Proportional to 13,121,240.76, 18,107,319.96 and 7,320,022.38

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Solution

The fourth proportional to 13,121,240.76, 18,107,319.96 and 7,320,022.38 is: 10,101,635.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121,240.76 : 18,107,319.96 = 7,320,022.38 : x
  2. Step 2: Convert to fraction form
    13,121,240.76/18,107,319.96 = 7,320,022.38/x
  3. Step 3: Cross multiply
    13,121,240.76x = 18,107,319.96 × 7,320,022.38
  4. Step 4: Simplify right side
    13,121,240.76x = 132,545,987,349,020.70
  5. Step 5: Solve for x
    x = 132,545,987,349,020.70/13,121,240.76
  6. Step 6: Final answer
    x = 10,101,635.19

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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.