Home / 21,079.29-31,618.98-6,289.68

Finding the Fourth Proportional to 21,079.29, 31,618.98 and 6,289.68

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Solution

The fourth proportional to 21,079.29, 31,618.98 and 6,289.68 is: 9,434.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.29 : 31,618.98 = 6,289.68 : x
  2. Step 2: Convert to fraction form
    21,079.29/31,618.98 = 6,289.68/x
  3. Step 3: Cross multiply
    21,079.29x = 31,618.98 × 6,289.68
  4. Step 4: Simplify right side
    21,079.29x = 198,873,266.13
  5. Step 5: Solve for x
    x = 198,873,266.13/21,079.29
  6. Step 6: Final answer
    x = 9,434.53

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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.