Home / 20,945.32-31,392.43-9,837.18

Finding the Fourth Proportional to 20,945.32, 31,392.43 and 9,837.18

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Solution

The fourth proportional to 20,945.32, 31,392.43 and 9,837.18 is: 14,743.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.32 : 31,392.43 = 9,837.18 : x
  2. Step 2: Convert to fraction form
    20,945.32/31,392.43 = 9,837.18/x
  3. Step 3: Cross multiply
    20,945.32x = 31,392.43 × 9,837.18
  4. Step 4: Simplify right side
    20,945.32x = 308,812,959.95
  5. Step 5: Solve for x
    x = 308,812,959.95/20,945.32
  6. Step 6: Final answer
    x = 14,743.77

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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.