Home / 21,066.39-31,601.40-5,484

Finding the Fourth Proportional to 21,066.39, 31,601.40 and 5,484

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Solution

The fourth proportional to 21,066.39, 31,601.40 and 5,484 is: 8,226.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,066.39 : 31,601.40 = 5,484 : x
  2. Step 2: Convert to fraction form
    21,066.39/31,601.40 = 5,484/x
  3. Step 3: Cross multiply
    21,066.39x = 31,601.40 × 5,484
  4. Step 4: Simplify right side
    21,066.39x = 173,302,077.60
  5. Step 5: Solve for x
    x = 173,302,077.60/21,066.39
  6. Step 6: Final answer
    x = 8,226.47

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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.