Home / 13,320,287.05-18,381,995.96-7,208,715.55

Finding the Fourth Proportional to 13,320,287.05, 18,381,995.96 and 7,208,715.55

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Solution

The fourth proportional to 13,320,287.05, 18,381,995.96 and 7,208,715.55 is: 9,948,027.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320,287.05 : 18,381,995.96 = 7,208,715.55 : x
  2. Step 2: Convert to fraction form
    13,320,287.05/18,381,995.96 = 7,208,715.55/x
  3. Step 3: Cross multiply
    13,320,287.05x = 18,381,995.96 × 7,208,715.55
  4. Step 4: Simplify right side
    13,320,287.05x = 132,510,580,080,845.58
  5. Step 5: Solve for x
    x = 132,510,580,080,845.58/13,320,287.05
  6. Step 6: Final answer
    x = 9,948,027.36

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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.