Home / 30,960.50-42,648.90-26,408.30

Finding the Fourth Proportional to 30,960.50, 42,648.90 and 26,408.30

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Solution

The fourth proportional to 30,960.50, 42,648.90 and 26,408.30 is: 36,378.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,960.50 : 42,648.90 = 26,408.30 : x
  2. Step 2: Convert to fraction form
    30,960.50/42,648.90 = 26,408.30/x
  3. Step 3: Cross multiply
    30,960.50x = 42,648.90 × 26,408.30
  4. Step 4: Simplify right side
    30,960.50x = 1,126,284,945.87
  5. Step 5: Solve for x
    x = 1,126,284,945.87/30,960.50
  6. Step 6: Final answer
    x = 36,378.13

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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.