Home / 12,659.39-18,898.72-10,999.09

Finding the Fourth Proportional to 12,659.39, 18,898.72 and 10,999.09

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Solution

The fourth proportional to 12,659.39, 18,898.72 and 10,999.09 is: 16,420.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,659.39 : 18,898.72 = 10,999.09 : x
  2. Step 2: Convert to fraction form
    12,659.39/18,898.72 = 10,999.09/x
  3. Step 3: Cross multiply
    12,659.39x = 18,898.72 × 10,999.09
  4. Step 4: Simplify right side
    12,659.39x = 207,868,718.29
  5. Step 5: Solve for x
    x = 207,868,718.29/12,659.39
  6. Step 6: Final answer
    x = 16,420.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.