Home / 31,119.66-46,686.78-12,400.83

Finding the Fourth Proportional to 31,119.66, 46,686.78 and 12,400.83

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Solution

The fourth proportional to 31,119.66, 46,686.78 and 12,400.83 is: 18,604.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,119.66 : 46,686.78 = 12,400.83 : x
  2. Step 2: Convert to fraction form
    31,119.66/46,686.78 = 12,400.83/x
  3. Step 3: Cross multiply
    31,119.66x = 46,686.78 × 12,400.83
  4. Step 4: Simplify right side
    31,119.66x = 578,954,822.03
  5. Step 5: Solve for x
    x = 578,954,822.03/31,119.66
  6. Step 6: Final answer
    x = 18,604.15

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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.