Home / 30,643.28-45,967.57-8,456.66

Finding the Fourth Proportional to 30,643.28, 45,967.57 and 8,456.66

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Solution

The fourth proportional to 30,643.28, 45,967.57 and 8,456.66 is: 12,685.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,643.28 : 45,967.57 = 8,456.66 : x
  2. Step 2: Convert to fraction form
    30,643.28/45,967.57 = 8,456.66/x
  3. Step 3: Cross multiply
    30,643.28x = 45,967.57 × 8,456.66
  4. Step 4: Simplify right side
    30,643.28x = 388,732,110.52
  5. Step 5: Solve for x
    x = 388,732,110.52/30,643.28
  6. Step 6: Final answer
    x = 12,685.72

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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.