Home / 21,908.27-30,218.87-13,960.35

Finding the Fourth Proportional to 21,908.27, 30,218.87 and 13,960.35

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Solution

The fourth proportional to 21,908.27, 30,218.87 and 13,960.35 is: 19,256.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908.27 : 30,218.87 = 13,960.35 : x
  2. Step 2: Convert to fraction form
    21,908.27/30,218.87 = 13,960.35/x
  3. Step 3: Cross multiply
    21,908.27x = 30,218.87 × 13,960.35
  4. Step 4: Simplify right side
    21,908.27x = 421,866,036.71
  5. Step 5: Solve for x
    x = 421,866,036.71/21,908.27
  6. Step 6: Final answer
    x = 19,256.02

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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.