Home / 30,664.68-42,318.78-18,726.10

Finding the Fourth Proportional to 30,664.68, 42,318.78 and 18,726.10

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Solution

The fourth proportional to 30,664.68, 42,318.78 and 18,726.10 is: 25,842.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,664.68 : 42,318.78 = 18,726.10 : x
  2. Step 2: Convert to fraction form
    30,664.68/42,318.78 = 18,726.10/x
  3. Step 3: Cross multiply
    30,664.68x = 42,318.78 × 18,726.10
  4. Step 4: Simplify right side
    30,664.68x = 792,465,706.16
  5. Step 5: Solve for x
    x = 792,465,706.16/30,664.68
  6. Step 6: Final answer
    x = 25,842.95

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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.