Home / 21,298.79-31,948.19-5,716.42

Finding the Fourth Proportional to 21,298.79, 31,948.19 and 5,716.42

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Solution

The fourth proportional to 21,298.79, 31,948.19 and 5,716.42 is: 8,574.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298.79 : 31,948.19 = 5,716.42 : x
  2. Step 2: Convert to fraction form
    21,298.79/31,948.19 = 5,716.42/x
  3. Step 3: Cross multiply
    21,298.79x = 31,948.19 × 5,716.42
  4. Step 4: Simplify right side
    21,298.79x = 182,629,207.34
  5. Step 5: Solve for x
    x = 182,629,207.34/21,298.79
  6. Step 6: Final answer
    x = 8,574.63

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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.