Home / 12,780.27-19,175.16-5,758.17

Finding the Fourth Proportional to 12,780.27, 19,175.16 and 5,758.17

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Solution

The fourth proportional to 12,780.27, 19,175.16 and 5,758.17 is: 8,639.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780.27 : 19,175.16 = 5,758.17 : x
  2. Step 2: Convert to fraction form
    12,780.27/19,175.16 = 5,758.17/x
  3. Step 3: Cross multiply
    12,780.27x = 19,175.16 × 5,758.17
  4. Step 4: Simplify right side
    12,780.27x = 110,413,831.06
  5. Step 5: Solve for x
    x = 110,413,831.06/12,780.27
  6. Step 6: Final answer
    x = 8,639.40

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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.