Home / 20,903.60-28,846.88-11,472.32

Finding the Fourth Proportional to 20,903.60, 28,846.88 and 11,472.32

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Solution

The fourth proportional to 20,903.60, 28,846.88 and 11,472.32 is: 15,831.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.60 : 28,846.88 = 11,472.32 : x
  2. Step 2: Convert to fraction form
    20,903.60/28,846.88 = 11,472.32/x
  3. Step 3: Cross multiply
    20,903.60x = 28,846.88 × 11,472.32
  4. Step 4: Simplify right side
    20,903.60x = 330,940,638.36
  5. Step 5: Solve for x
    x = 330,940,638.36/20,903.60
  6. Step 6: Final answer
    x = 15,831.75

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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.