Home / 26,900.55-40,320.18-12,840.57

Finding the Fourth Proportional to 26,900.55, 40,320.18 and 12,840.57

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Solution

The fourth proportional to 26,900.55, 40,320.18 and 12,840.57 is: 19,246.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,900.55 : 40,320.18 = 12,840.57 : x
  2. Step 2: Convert to fraction form
    26,900.55/40,320.18 = 12,840.57/x
  3. Step 3: Cross multiply
    26,900.55x = 40,320.18 × 12,840.57
  4. Step 4: Simplify right side
    26,900.55x = 517,734,093.70
  5. Step 5: Solve for x
    x = 517,734,093.70/26,900.55
  6. Step 6: Final answer
    x = 19,246.23

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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.