Home / 12,864.78-19,283.67-6,281.91

Finding the Fourth Proportional to 12,864.78, 19,283.67 and 6,281.91

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Solution

The fourth proportional to 12,864.78, 19,283.67 and 6,281.91 is: 9,416.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,864.78 : 19,283.67 = 6,281.91 : x
  2. Step 2: Convert to fraction form
    12,864.78/19,283.67 = 6,281.91/x
  3. Step 3: Cross multiply
    12,864.78x = 19,283.67 × 6,281.91
  4. Step 4: Simplify right side
    12,864.78x = 121,138,279.41
  5. Step 5: Solve for x
    x = 121,138,279.41/12,864.78
  6. Step 6: Final answer
    x = 9,416.27

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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.