Home / 20,805.95-31,227.46-9,718.88

Finding the Fourth Proportional to 20,805.95, 31,227.46 and 9,718.88

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Solution

The fourth proportional to 20,805.95, 31,227.46 and 9,718.88 is: 14,586.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,805.95 : 31,227.46 = 9,718.88 : x
  2. Step 2: Convert to fraction form
    20,805.95/31,227.46 = 9,718.88/x
  3. Step 3: Cross multiply
    20,805.95x = 31,227.46 × 9,718.88
  4. Step 4: Simplify right side
    20,805.95x = 303,496,038.81
  5. Step 5: Solve for x
    x = 303,496,038.81/20,805.95
  6. Step 6: Final answer
    x = 14,586.99

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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.