Home / 30,901.24-42,640.52-18,965.08

Finding the Fourth Proportional to 30,901.24, 42,640.52 and 18,965.08

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Solution

The fourth proportional to 30,901.24, 42,640.52 and 18,965.08 is: 26,169.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,901.24 : 42,640.52 = 18,965.08 : x
  2. Step 2: Convert to fraction form
    30,901.24/42,640.52 = 18,965.08/x
  3. Step 3: Cross multiply
    30,901.24x = 42,640.52 × 18,965.08
  4. Step 4: Simplify right side
    30,901.24x = 808,680,873.04
  5. Step 5: Solve for x
    x = 808,680,873.04/30,901.24
  6. Step 6: Final answer
    x = 26,169.85

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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.