Home / 9,139.80-13,707.97-4,455.11

Finding the Fourth Proportional to 9,139.80, 13,707.97 and 4,455.11

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Solution

The fourth proportional to 9,139.80, 13,707.97 and 4,455.11 is: 6,681.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,139.80 : 13,707.97 = 4,455.11 : x
  2. Step 2: Convert to fraction form
    9,139.80/13,707.97 = 4,455.11/x
  3. Step 3: Cross multiply
    9,139.80x = 13,707.97 × 4,455.11
  4. Step 4: Simplify right side
    9,139.80x = 61,070,451.26
  5. Step 5: Solve for x
    x = 61,070,451.26/9,139.80
  6. Step 6: Final answer
    x = 6,681.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.