Home / 20,899.47-31,295.69-11,529.08

Finding the Fourth Proportional to 20,899.47, 31,295.69 and 11,529.08

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Solution

The fourth proportional to 20,899.47, 31,295.69 and 11,529.08 is: 17,264.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.47 : 31,295.69 = 11,529.08 : x
  2. Step 2: Convert to fraction form
    20,899.47/31,295.69 = 11,529.08/x
  3. Step 3: Cross multiply
    20,899.47x = 31,295.69 × 11,529.08
  4. Step 4: Simplify right side
    20,899.47x = 360,810,299.54
  5. Step 5: Solve for x
    x = 360,810,299.54/20,899.47
  6. Step 6: Final answer
    x = 17,264.09

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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.