Home / 21,939.04-30,275.75-11,867.45

Finding the Fourth Proportional to 21,939.04, 30,275.75 and 11,867.45

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Solution

The fourth proportional to 21,939.04, 30,275.75 and 11,867.45 is: 16,377.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.04 : 30,275.75 = 11,867.45 : x
  2. Step 2: Convert to fraction form
    21,939.04/30,275.75 = 11,867.45/x
  3. Step 3: Cross multiply
    21,939.04x = 30,275.75 × 11,867.45
  4. Step 4: Simplify right side
    21,939.04x = 359,295,949.34
  5. Step 5: Solve for x
    x = 359,295,949.34/21,939.04
  6. Step 6: Final answer
    x = 16,377.01

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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.