Home / 28,009.01-38,626.47-20,443.36

Finding the Fourth Proportional to 28,009.01, 38,626.47 and 20,443.36

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Solution

The fourth proportional to 28,009.01, 38,626.47 and 20,443.36 is: 28,192.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,009.01 : 38,626.47 = 20,443.36 : x
  2. Step 2: Convert to fraction form
    28,009.01/38,626.47 = 20,443.36/x
  3. Step 3: Cross multiply
    28,009.01x = 38,626.47 × 20,443.36
  4. Step 4: Simplify right side
    28,009.01x = 789,654,831.74
  5. Step 5: Solve for x
    x = 789,654,831.74/28,009.01
  6. Step 6: Final answer
    x = 28,192.89

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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.