Home / 21,230.79-31,842.63-6,436.17

Finding the Fourth Proportional to 21,230.79, 31,842.63 and 6,436.17

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Solution

The fourth proportional to 21,230.79, 31,842.63 and 6,436.17 is: 9,653.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,230.79 : 31,842.63 = 6,436.17 : x
  2. Step 2: Convert to fraction form
    21,230.79/31,842.63 = 6,436.17/x
  3. Step 3: Cross multiply
    21,230.79x = 31,842.63 × 6,436.17
  4. Step 4: Simplify right side
    21,230.79x = 204,944,579.93
  5. Step 5: Solve for x
    x = 204,944,579.93/21,230.79
  6. Step 6: Final answer
    x = 9,653.18

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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.