Home / 13,447.77-20,143.91-7,884.23

Finding the Fourth Proportional to 13,447.77, 20,143.91 and 7,884.23

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Solution

The fourth proportional to 13,447.77, 20,143.91 and 7,884.23 is: 11,810.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.77 : 20,143.91 = 7,884.23 : x
  2. Step 2: Convert to fraction form
    13,447.77/20,143.91 = 7,884.23/x
  3. Step 3: Cross multiply
    13,447.77x = 20,143.91 × 7,884.23
  4. Step 4: Simplify right side
    13,447.77x = 158,819,079.40
  5. Step 5: Solve for x
    x = 158,819,079.40/13,447.77
  6. Step 6: Final answer
    x = 11,810.07

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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.