Home / 20,831.22-28,746.96-11,271.08

Finding the Fourth Proportional to 20,831.22, 28,746.96 and 11,271.08

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Solution

The fourth proportional to 20,831.22, 28,746.96 and 11,271.08 is: 15,554.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831.22 : 28,746.96 = 11,271.08 : x
  2. Step 2: Convert to fraction form
    20,831.22/28,746.96 = 11,271.08/x
  3. Step 3: Cross multiply
    20,831.22x = 28,746.96 × 11,271.08
  4. Step 4: Simplify right side
    20,831.22x = 324,009,285.92
  5. Step 5: Solve for x
    x = 324,009,285.92/20,831.22
  6. Step 6: Final answer
    x = 15,554.02

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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.