Home / 15,426.40-21,289.08-9,137.56

Finding the Fourth Proportional to 15,426.40, 21,289.08 and 9,137.56

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Solution

The fourth proportional to 15,426.40, 21,289.08 and 9,137.56 is: 12,610.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,426.40 : 21,289.08 = 9,137.56 : x
  2. Step 2: Convert to fraction form
    15,426.40/21,289.08 = 9,137.56/x
  3. Step 3: Cross multiply
    15,426.40x = 21,289.08 × 9,137.56
  4. Step 4: Simplify right side
    15,426.40x = 194,530,245.84
  5. Step 5: Solve for x
    x = 194,530,245.84/15,426.40
  6. Step 6: Final answer
    x = 12,610.22

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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.