Home / 31,325.09-43,206.30-20,729.07

Finding the Fourth Proportional to 31,325.09, 43,206.30 and 20,729.07

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Solution

The fourth proportional to 31,325.09, 43,206.30 and 20,729.07 is: 28,591.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,325.09 : 43,206.30 = 20,729.07 : x
  2. Step 2: Convert to fraction form
    31,325.09/43,206.30 = 20,729.07/x
  3. Step 3: Cross multiply
    31,325.09x = 43,206.30 × 20,729.07
  4. Step 4: Simplify right side
    31,325.09x = 895,626,417.14
  5. Step 5: Solve for x
    x = 895,626,417.14/31,325.09
  6. Step 6: Final answer
    x = 28,591.35

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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.