Home / 13,928.28-19,210.31-9,679.28

Finding the Fourth Proportional to 13,928.28, 19,210.31 and 9,679.28

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Solution

The fourth proportional to 13,928.28, 19,210.31 and 9,679.28 is: 13,349.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.28 : 19,210.31 = 9,679.28 : x
  2. Step 2: Convert to fraction form
    13,928.28/19,210.31 = 9,679.28/x
  3. Step 3: Cross multiply
    13,928.28x = 19,210.31 × 9,679.28
  4. Step 4: Simplify right side
    13,928.28x = 185,941,824.93
  5. Step 5: Solve for x
    x = 185,941,824.93/13,928.28
  6. Step 6: Final answer
    x = 13,349.95

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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.