Home / 21,140.97-31,708.93-5,559.81

Finding the Fourth Proportional to 21,140.97, 31,708.93 and 5,559.81

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Solution

The fourth proportional to 21,140.97, 31,708.93 and 5,559.81 is: 8,339.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.97 : 31,708.93 = 5,559.81 : x
  2. Step 2: Convert to fraction form
    21,140.97/31,708.93 = 5,559.81/x
  3. Step 3: Cross multiply
    21,140.97x = 31,708.93 × 5,559.81
  4. Step 4: Simplify right side
    21,140.97x = 176,295,626.10
  5. Step 5: Solve for x
    x = 176,295,626.10/21,140.97
  6. Step 6: Final answer
    x = 8,339.05

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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.