Home / 21,078.77-31,618.15-6,298.06

Finding the Fourth Proportional to 21,078.77, 31,618.15 and 6,298.06

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Solution

The fourth proportional to 21,078.77, 31,618.15 and 6,298.06 is: 9,447.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,078.77 : 31,618.15 = 6,298.06 : x
  2. Step 2: Convert to fraction form
    21,078.77/31,618.15 = 6,298.06/x
  3. Step 3: Cross multiply
    21,078.77x = 31,618.15 × 6,298.06
  4. Step 4: Simplify right side
    21,078.77x = 199,133,005.79
  5. Step 5: Solve for x
    x = 199,133,005.79/21,078.77
  6. Step 6: Final answer
    x = 9,447.09

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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.