Home / 31,519.95-43,515.32-20,924.07

Finding the Fourth Proportional to 31,519.95, 43,515.32 and 20,924.07

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Solution

The fourth proportional to 31,519.95, 43,515.32 and 20,924.07 is: 28,887.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,519.95 : 43,515.32 = 20,924.07 : x
  2. Step 2: Convert to fraction form
    31,519.95/43,515.32 = 20,924.07/x
  3. Step 3: Cross multiply
    31,519.95x = 43,515.32 × 20,924.07
  4. Step 4: Simplify right side
    31,519.95x = 910,517,601.75
  5. Step 5: Solve for x
    x = 910,517,601.75/31,519.95
  6. Step 6: Final answer
    x = 28,887.03

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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.