Home / 30,937.38-42,703.72-18,189.94

Finding the Fourth Proportional to 30,937.38, 42,703.72 and 18,189.94

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Solution

The fourth proportional to 30,937.38, 42,703.72 and 18,189.94 is: 25,108.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,937.38 : 42,703.72 = 18,189.94 : x
  2. Step 2: Convert to fraction form
    30,937.38/42,703.72 = 18,189.94/x
  3. Step 3: Cross multiply
    30,937.38x = 42,703.72 × 18,189.94
  4. Step 4: Simplify right side
    30,937.38x = 776,778,104.58
  5. Step 5: Solve for x
    x = 776,778,104.58/30,937.38
  6. Step 6: Final answer
    x = 25,108.08

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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.