Home / 13,919.28-19,208.58-7,631.64

Finding the Fourth Proportional to 13,919.28, 19,208.58 and 7,631.64

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Solution

The fourth proportional to 13,919.28, 19,208.58 and 7,631.64 is: 10,531.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.28 : 19,208.58 = 7,631.64 : x
  2. Step 2: Convert to fraction form
    13,919.28/19,208.58 = 7,631.64/x
  3. Step 3: Cross multiply
    13,919.28x = 19,208.58 × 7,631.64
  4. Step 4: Simplify right side
    13,919.28x = 146,592,967.47
  5. Step 5: Solve for x
    x = 146,592,967.47/13,919.28
  6. Step 6: Final answer
    x = 10,531.65

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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.