Home / 15,150.30-20,903.85-9,180.60

Finding the Fourth Proportional to 15,150.30, 20,903.85 and 9,180.60

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Solution

The fourth proportional to 15,150.30, 20,903.85 and 9,180.60 is: 12,667.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,150.30 : 20,903.85 = 9,180.60 : x
  2. Step 2: Convert to fraction form
    15,150.30/20,903.85 = 9,180.60/x
  3. Step 3: Cross multiply
    15,150.30x = 20,903.85 × 9,180.60
  4. Step 4: Simplify right side
    15,150.30x = 191,909,885.31
  5. Step 5: Solve for x
    x = 191,909,885.31/15,150.30
  6. Step 6: Final answer
    x = 12,667.07

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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.