Home / 26,670.20-39,981.52-13,515.80

Finding the Fourth Proportional to 26,670.20, 39,981.52 and 13,515.80

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Solution

The fourth proportional to 26,670.20, 39,981.52 and 13,515.80 is: 20,261.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,670.20 : 39,981.52 = 13,515.80 : x
  2. Step 2: Convert to fraction form
    26,670.20/39,981.52 = 13,515.80/x
  3. Step 3: Cross multiply
    26,670.20x = 39,981.52 × 13,515.80
  4. Step 4: Simplify right side
    26,670.20x = 540,382,228.02
  5. Step 5: Solve for x
    x = 540,382,228.02/26,670.20
  6. Step 6: Final answer
    x = 20,261.65

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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.