Home / 21,322.36-31,934.94-17,421.40

Finding the Fourth Proportional to 21,322.36, 31,934.94 and 17,421.40

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Solution

The fourth proportional to 21,322.36, 31,934.94 and 17,421.40 is: 26,092.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.36 : 31,934.94 = 17,421.40 : x
  2. Step 2: Convert to fraction form
    21,322.36/31,934.94 = 17,421.40/x
  3. Step 3: Cross multiply
    21,322.36x = 31,934.94 × 17,421.40
  4. Step 4: Simplify right side
    21,322.36x = 556,351,363.72
  5. Step 5: Solve for x
    x = 556,351,363.72/21,322.36
  6. Step 6: Final answer
    x = 26,092.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.