Home / 13,011.12-17,946.08-8,979.48

Finding the Fourth Proportional to 13,011.12, 17,946.08 and 8,979.48

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Solution

The fourth proportional to 13,011.12, 17,946.08 and 8,979.48 is: 12,385.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,011.12 : 17,946.08 = 8,979.48 : x
  2. Step 2: Convert to fraction form
    13,011.12/17,946.08 = 8,979.48/x
  3. Step 3: Cross multiply
    13,011.12x = 17,946.08 × 8,979.48
  4. Step 4: Simplify right side
    13,011.12x = 161,146,530.94
  5. Step 5: Solve for x
    x = 161,146,530.94/13,011.12
  6. Step 6: Final answer
    x = 12,385.29

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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.