Home / 12,864.04-17,742.36-8,613.75

Finding the Fourth Proportional to 12,864.04, 17,742.36 and 8,613.75

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Solution

The fourth proportional to 12,864.04, 17,742.36 and 8,613.75 is: 11,880.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,864.04 : 17,742.36 = 8,613.75 : x
  2. Step 2: Convert to fraction form
    12,864.04/17,742.36 = 8,613.75/x
  3. Step 3: Cross multiply
    12,864.04x = 17,742.36 × 8,613.75
  4. Step 4: Simplify right side
    12,864.04x = 152,828,253.45
  5. Step 5: Solve for x
    x = 152,828,253.45/12,864.04
  6. Step 6: Final answer
    x = 11,880.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.