Home / 22,448.16-30,976.80-13,015.20

Finding the Fourth Proportional to 22,448.16, 30,976.80 and 13,015.20

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Solution

The fourth proportional to 22,448.16, 30,976.80 and 13,015.20 is: 17,960.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,448.16 : 30,976.80 = 13,015.20 : x
  2. Step 2: Convert to fraction form
    22,448.16/30,976.80 = 13,015.20/x
  3. Step 3: Cross multiply
    22,448.16x = 30,976.80 × 13,015.20
  4. Step 4: Simplify right side
    22,448.16x = 403,169,247.36
  5. Step 5: Solve for x
    x = 403,169,247.36/22,448.16
  6. Step 6: Final answer
    x = 17,960.01

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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.