Home / 13,921.36-19,210.38-7,952.20

Finding the Fourth Proportional to 13,921.36, 19,210.38 and 7,952.20

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Solution

The fourth proportional to 13,921.36, 19,210.38 and 7,952.20 is: 10,973.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.36 : 19,210.38 = 7,952.20 : x
  2. Step 2: Convert to fraction form
    13,921.36/19,210.38 = 7,952.20/x
  3. Step 3: Cross multiply
    13,921.36x = 19,210.38 × 7,952.20
  4. Step 4: Simplify right side
    13,921.36x = 152,764,783.84
  5. Step 5: Solve for x
    x = 152,764,783.84/13,921.36
  6. Step 6: Final answer
    x = 10,973.41

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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.