Home / 39,141.46-58,716.77-12,478.15

Finding the Fourth Proportional to 39,141.46, 58,716.77 and 12,478.15

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Solution

The fourth proportional to 39,141.46, 58,716.77 and 12,478.15 is: 18,718.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,141.46 : 58,716.77 = 12,478.15 : x
  2. Step 2: Convert to fraction form
    39,141.46/58,716.77 = 12,478.15/x
  3. Step 3: Cross multiply
    39,141.46x = 58,716.77 × 12,478.15
  4. Step 4: Simplify right side
    39,141.46x = 732,676,674.58
  5. Step 5: Solve for x
    x = 732,676,674.58/39,141.46
  6. Step 6: Final answer
    x = 18,718.68

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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.