Home / 13,867.76-19,138.84-7,901.36

Finding the Fourth Proportional to 13,867.76, 19,138.84 and 7,901.36

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Solution

The fourth proportional to 13,867.76, 19,138.84 and 7,901.36 is: 10,904.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,867.76 : 19,138.84 = 7,901.36 : x
  2. Step 2: Convert to fraction form
    13,867.76/19,138.84 = 7,901.36/x
  3. Step 3: Cross multiply
    13,867.76x = 19,138.84 × 7,901.36
  4. Step 4: Simplify right side
    13,867.76x = 151,222,864.82
  5. Step 5: Solve for x
    x = 151,222,864.82/13,867.76
  6. Step 6: Final answer
    x = 10,904.64

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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.