Home / 21,231.40-31,850.95-17,317.35

Finding the Fourth Proportional to 21,231.40, 31,850.95 and 17,317.35

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Solution

The fourth proportional to 21,231.40, 31,850.95 and 17,317.35 is: 25,979.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,231.40 : 31,850.95 = 17,317.35 : x
  2. Step 2: Convert to fraction form
    21,231.40/31,850.95 = 17,317.35/x
  3. Step 3: Cross multiply
    21,231.40x = 31,850.95 × 17,317.35
  4. Step 4: Simplify right side
    21,231.40x = 551,574,048.98
  5. Step 5: Solve for x
    x = 551,574,048.98/21,231.40
  6. Step 6: Final answer
    x = 25,979.17

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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.