Home / 40,138.40-60,214.55-13,486.99

Finding the Fourth Proportional to 40,138.40, 60,214.55 and 13,486.99

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Solution

The fourth proportional to 40,138.40, 60,214.55 and 13,486.99 is: 20,232.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,138.40 : 60,214.55 = 13,486.99 : x
  2. Step 2: Convert to fraction form
    40,138.40/60,214.55 = 13,486.99/x
  3. Step 3: Cross multiply
    40,138.40x = 60,214.55 × 13,486.99
  4. Step 4: Simplify right side
    40,138.40x = 812,112,954.94
  5. Step 5: Solve for x
    x = 812,112,954.94/40,138.40
  6. Step 6: Final answer
    x = 20,232.82

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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.