Home / 13,867.64-19,135.72-7,816.72

Finding the Fourth Proportional to 13,867.64, 19,135.72 and 7,816.72

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Solution

The fourth proportional to 13,867.64, 19,135.72 and 7,816.72 is: 10,786.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,867.64 : 19,135.72 = 7,816.72 : x
  2. Step 2: Convert to fraction form
    13,867.64/19,135.72 = 7,816.72/x
  3. Step 3: Cross multiply
    13,867.64x = 19,135.72 × 7,816.72
  4. Step 4: Simplify right side
    13,867.64x = 149,578,565.24
  5. Step 5: Solve for x
    x = 149,578,565.24/13,867.64
  6. Step 6: Final answer
    x = 10,786.16

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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.