Home / 21,277.44-29,358.81-13,722.30

Finding the Fourth Proportional to 21,277.44, 29,358.81 and 13,722.30

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Solution

The fourth proportional to 21,277.44, 29,358.81 and 13,722.30 is: 18,934.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.44 : 29,358.81 = 13,722.30 : x
  2. Step 2: Convert to fraction form
    21,277.44/29,358.81 = 13,722.30/x
  3. Step 3: Cross multiply
    21,277.44x = 29,358.81 × 13,722.30
  4. Step 4: Simplify right side
    21,277.44x = 402,870,398.46
  5. Step 5: Solve for x
    x = 402,870,398.46/21,277.44
  6. Step 6: Final answer
    x = 18,934.16

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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.