Home / 21,089.11-31,633.68-6,298.30

Finding the Fourth Proportional to 21,089.11, 31,633.68 and 6,298.30

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Solution

The fourth proportional to 21,089.11, 31,633.68 and 6,298.30 is: 9,447.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.11 : 31,633.68 = 6,298.30 : x
  2. Step 2: Convert to fraction form
    21,089.11/31,633.68 = 6,298.30/x
  3. Step 3: Cross multiply
    21,089.11x = 31,633.68 × 6,298.30
  4. Step 4: Simplify right side
    21,089.11x = 199,238,406.74
  5. Step 5: Solve for x
    x = 199,238,406.74/21,089.11
  6. Step 6: Final answer
    x = 9,447.45

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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.