Home / 13,328.74-19,951.18-9,144.28

Finding the Fourth Proportional to 13,328.74, 19,951.18 and 9,144.28

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Solution

The fourth proportional to 13,328.74, 19,951.18 and 9,144.28 is: 13,687.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.74 : 19,951.18 = 9,144.28 : x
  2. Step 2: Convert to fraction form
    13,328.74/19,951.18 = 9,144.28/x
  3. Step 3: Cross multiply
    13,328.74x = 19,951.18 × 9,144.28
  4. Step 4: Simplify right side
    13,328.74x = 182,439,176.25
  5. Step 5: Solve for x
    x = 182,439,176.25/13,328.74
  6. Step 6: Final answer
    x = 13,687.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.