Home / 15,559.46-21,479.28-9,183.95

Finding the Fourth Proportional to 15,559.46, 21,479.28 and 9,183.95

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Solution

The fourth proportional to 15,559.46, 21,479.28 and 9,183.95 is: 12,678.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,559.46 : 21,479.28 = 9,183.95 : x
  2. Step 2: Convert to fraction form
    15,559.46/21,479.28 = 9,183.95/x
  3. Step 3: Cross multiply
    15,559.46x = 21,479.28 × 9,183.95
  4. Step 4: Simplify right side
    15,559.46x = 197,264,633.56
  5. Step 5: Solve for x
    x = 197,264,633.56/15,559.46
  6. Step 6: Final answer
    x = 12,678.12

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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.