Home / 13,172,348.21-18,178,055.75-7,211,655.55

Finding the Fourth Proportional to 13,172,348.21, 18,178,055.75 and 7,211,655.55

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Solution

The fourth proportional to 13,172,348.21, 18,178,055.75 and 7,211,655.55 is: 9,952,202.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172,348.21 : 18,178,055.75 = 7,211,655.55 : x
  2. Step 2: Convert to fraction form
    13,172,348.21/18,178,055.75 = 7,211,655.55/x
  3. Step 3: Cross multiply
    13,172,348.21x = 18,178,055.75 × 7,211,655.55
  4. Step 4: Simplify right side
    13,172,348.21x = 131,093,876,510,748.36
  5. Step 5: Solve for x
    x = 131,093,876,510,748.36/13,172,348.21
  6. Step 6: Final answer
    x = 9,952,202.48

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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.