Home / 12,859.17-19,287.18-3,498.81

Finding the Fourth Proportional to 12,859.17, 19,287.18 and 3,498.81

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Solution

The fourth proportional to 12,859.17, 19,287.18 and 3,498.81 is: 5,247.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,859.17 : 19,287.18 = 3,498.81 : x
  2. Step 2: Convert to fraction form
    12,859.17/19,287.18 = 3,498.81/x
  3. Step 3: Cross multiply
    12,859.17x = 19,287.18 × 3,498.81
  4. Step 4: Simplify right side
    12,859.17x = 67,482,178.26
  5. Step 5: Solve for x
    x = 67,482,178.26/12,859.17
  6. Step 6: Final answer
    x = 5,247.79

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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.