Home / 30,838.23-42,557.54-18,908.15

Finding the Fourth Proportional to 30,838.23, 42,557.54 and 18,908.15

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Solution

The fourth proportional to 30,838.23, 42,557.54 and 18,908.15 is: 26,093.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,838.23 : 42,557.54 = 18,908.15 : x
  2. Step 2: Convert to fraction form
    30,838.23/42,557.54 = 18,908.15/x
  3. Step 3: Cross multiply
    30,838.23x = 42,557.54 × 18,908.15
  4. Step 4: Simplify right side
    30,838.23x = 804,684,042.62
  5. Step 5: Solve for x
    x = 804,684,042.62/30,838.23
  6. Step 6: Final answer
    x = 26,093.72

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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.