Home / 13,931.93-19,226.39-7,644.30

Finding the Fourth Proportional to 13,931.93, 19,226.39 and 7,644.30

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Solution

The fourth proportional to 13,931.93, 19,226.39 and 7,644.30 is: 10,549.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.93 : 19,226.39 = 7,644.30 : x
  2. Step 2: Convert to fraction form
    13,931.93/19,226.39 = 7,644.30/x
  3. Step 3: Cross multiply
    13,931.93x = 19,226.39 × 7,644.30
  4. Step 4: Simplify right side
    13,931.93x = 146,972,293.08
  5. Step 5: Solve for x
    x = 146,972,293.08/13,931.93
  6. Step 6: Final answer
    x = 10,549.31

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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.