Home / 20,009.40-27,612.80-11,057.50

Finding the Fourth Proportional to 20,009.40, 27,612.80 and 11,057.50

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Solution

The fourth proportional to 20,009.40, 27,612.80 and 11,057.50 is: 15,259.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,009.40 : 27,612.80 = 11,057.50 : x
  2. Step 2: Convert to fraction form
    20,009.40/27,612.80 = 11,057.50/x
  3. Step 3: Cross multiply
    20,009.40x = 27,612.80 × 11,057.50
  4. Step 4: Simplify right side
    20,009.40x = 305,328,536
  5. Step 5: Solve for x
    x = 305,328,536/20,009.40
  6. Step 6: Final answer
    x = 15,259.25

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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.