Home / 31,618.83-43,619.07-18,864.72

Finding the Fourth Proportional to 31,618.83, 43,619.07 and 18,864.72

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Solution

The fourth proportional to 31,618.83, 43,619.07 and 18,864.72 is: 26,024.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,618.83 : 43,619.07 = 18,864.72 : x
  2. Step 2: Convert to fraction form
    31,618.83/43,619.07 = 18,864.72/x
  3. Step 3: Cross multiply
    31,618.83x = 43,619.07 × 18,864.72
  4. Step 4: Simplify right side
    31,618.83x = 822,861,612.95
  5. Step 5: Solve for x
    x = 822,861,612.95/31,618.83
  6. Step 6: Final answer
    x = 26,024.41

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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.