Home / 13,865.48-19,135.14-9,146.42

Finding the Fourth Proportional to 13,865.48, 19,135.14 and 9,146.42

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Solution

The fourth proportional to 13,865.48, 19,135.14 and 9,146.42 is: 12,622.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.48 : 19,135.14 = 9,146.42 : x
  2. Step 2: Convert to fraction form
    13,865.48/19,135.14 = 9,146.42/x
  3. Step 3: Cross multiply
    13,865.48x = 19,135.14 × 9,146.42
  4. Step 4: Simplify right side
    13,865.48x = 175,018,027.20
  5. Step 5: Solve for x
    x = 175,018,027.20/13,865.48
  6. Step 6: Final answer
    x = 12,622.57

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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.