Home / 31,621.28-43,641.95-18,875

Finding the Fourth Proportional to 31,621.28, 43,641.95 and 18,875

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Solution

The fourth proportional to 31,621.28, 43,641.95 and 18,875 is: 26,050.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,621.28 : 43,641.95 = 18,875 : x
  2. Step 2: Convert to fraction form
    31,621.28/43,641.95 = 18,875/x
  3. Step 3: Cross multiply
    31,621.28x = 43,641.95 × 18,875
  4. Step 4: Simplify right side
    31,621.28x = 823,741,711.88
  5. Step 5: Solve for x
    x = 823,741,711.88/31,621.28
  6. Step 6: Final answer
    x = 26,050.23

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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.