Home / 14,772.54-20,390.66-9,109.07

Finding the Fourth Proportional to 14,772.54, 20,390.66 and 9,109.07

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Solution

The fourth proportional to 14,772.54, 20,390.66 and 9,109.07 is: 12,573.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,772.54 : 20,390.66 = 9,109.07 : x
  2. Step 2: Convert to fraction form
    14,772.54/20,390.66 = 9,109.07/x
  3. Step 3: Cross multiply
    14,772.54x = 20,390.66 × 9,109.07
  4. Step 4: Simplify right side
    14,772.54x = 185,739,912.41
  5. Step 5: Solve for x
    x = 185,739,912.41/14,772.54
  6. Step 6: Final answer
    x = 12,573.32

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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.