Home / 13,931.88-19,226.33-7,644.25

Finding the Fourth Proportional to 13,931.88, 19,226.33 and 7,644.25

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Solution

The fourth proportional to 13,931.88, 19,226.33 and 7,644.25 is: 10,549.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.88 : 19,226.33 = 7,644.25 : x
  2. Step 2: Convert to fraction form
    13,931.88/19,226.33 = 7,644.25/x
  3. Step 3: Cross multiply
    13,931.88x = 19,226.33 × 7,644.25
  4. Step 4: Simplify right side
    13,931.88x = 146,970,873.10
  5. Step 5: Solve for x
    x = 146,970,873.10/13,931.88
  6. Step 6: Final answer
    x = 10,549.25

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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.