Home / 26,133.20-39,199.80-12,309.20

Finding the Fourth Proportional to 26,133.20, 39,199.80 and 12,309.20

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Solution

The fourth proportional to 26,133.20, 39,199.80 and 12,309.20 is: 18,463.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,133.20 : 39,199.80 = 12,309.20 : x
  2. Step 2: Convert to fraction form
    26,133.20/39,199.80 = 12,309.20/x
  3. Step 3: Cross multiply
    26,133.20x = 39,199.80 × 12,309.20
  4. Step 4: Simplify right side
    26,133.20x = 482,518,178.16
  5. Step 5: Solve for x
    x = 482,518,178.16/26,133.20
  6. Step 6: Final answer
    x = 18,463.80

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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.