Home / 30,633.40-42,280.68-18,694.18

Finding the Fourth Proportional to 30,633.40, 42,280.68 and 18,694.18

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Solution

The fourth proportional to 30,633.40, 42,280.68 and 18,694.18 is: 25,801.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,633.40 : 42,280.68 = 18,694.18 : x
  2. Step 2: Convert to fraction form
    30,633.40/42,280.68 = 18,694.18/x
  3. Step 3: Cross multiply
    30,633.40x = 42,280.68 × 18,694.18
  4. Step 4: Simplify right side
    30,633.40x = 790,402,642.44
  5. Step 5: Solve for x
    x = 790,402,642.44/30,633.40
  6. Step 6: Final answer
    x = 25,801.99

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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.