Home / 31,186.13-46,790.81-18,715.10

Finding the Fourth Proportional to 31,186.13, 46,790.81 and 18,715.10

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Solution

The fourth proportional to 31,186.13, 46,790.81 and 18,715.10 is: 28,079.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,186.13 : 46,790.81 = 18,715.10 : x
  2. Step 2: Convert to fraction form
    31,186.13/46,790.81 = 18,715.10/x
  3. Step 3: Cross multiply
    31,186.13x = 46,790.81 × 18,715.10
  4. Step 4: Simplify right side
    31,186.13x = 875,694,360.70
  5. Step 5: Solve for x
    x = 875,694,360.70/31,186.13
  6. Step 6: Final answer
    x = 28,079.61

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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.