Home / 30,885.28-42,621.84-16,738.13

Finding the Fourth Proportional to 30,885.28, 42,621.84 and 16,738.13

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Solution

The fourth proportional to 30,885.28, 42,621.84 and 16,738.13 is: 23,098.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,885.28 : 42,621.84 = 16,738.13 : x
  2. Step 2: Convert to fraction form
    30,885.28/42,621.84 = 16,738.13/x
  3. Step 3: Cross multiply
    30,885.28x = 42,621.84 × 16,738.13
  4. Step 4: Simplify right side
    30,885.28x = 713,409,685.65
  5. Step 5: Solve for x
    x = 713,409,685.65/30,885.28
  6. Step 6: Final answer
    x = 23,098.69

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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.