Home / 26,931.90-40,403.67-8,211.45

Finding the Fourth Proportional to 26,931.90, 40,403.67 and 8,211.45

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Solution

The fourth proportional to 26,931.90, 40,403.67 and 8,211.45 is: 12,318.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,931.90 : 40,403.67 = 8,211.45 : x
  2. Step 2: Convert to fraction form
    26,931.90/40,403.67 = 8,211.45/x
  3. Step 3: Cross multiply
    26,931.90x = 40,403.67 × 8,211.45
  4. Step 4: Simplify right side
    26,931.90x = 331,772,716.02
  5. Step 5: Solve for x
    x = 331,772,716.02/26,931.90
  6. Step 6: Final answer
    x = 12,318.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.