Home / 30,709.08-42,381.03-17,279.55

Finding the Fourth Proportional to 30,709.08, 42,381.03 and 17,279.55

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Solution

The fourth proportional to 30,709.08, 42,381.03 and 17,279.55 is: 23,847.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,709.08 : 42,381.03 = 17,279.55 : x
  2. Step 2: Convert to fraction form
    30,709.08/42,381.03 = 17,279.55/x
  3. Step 3: Cross multiply
    30,709.08x = 42,381.03 × 17,279.55
  4. Step 4: Simplify right side
    30,709.08x = 732,325,126.94
  5. Step 5: Solve for x
    x = 732,325,126.94/30,709.08
  6. Step 6: Final answer
    x = 23,847.19

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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.