Home / 30,486.19-42,069.86-16,874.25

Finding the Fourth Proportional to 30,486.19, 42,069.86 and 16,874.25

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Solution

The fourth proportional to 30,486.19, 42,069.86 and 16,874.25 is: 23,285.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,486.19 : 42,069.86 = 16,874.25 : x
  2. Step 2: Convert to fraction form
    30,486.19/42,069.86 = 16,874.25/x
  3. Step 3: Cross multiply
    30,486.19x = 42,069.86 × 16,874.25
  4. Step 4: Simplify right side
    30,486.19x = 709,897,487.65
  5. Step 5: Solve for x
    x = 709,897,487.65/30,486.19
  6. Step 6: Final answer
    x = 23,285.87

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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.