Home / 21,315.08-31,971.45-6,523.99

Finding the Fourth Proportional to 21,315.08, 31,971.45 and 6,523.99

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Solution

The fourth proportional to 21,315.08, 31,971.45 and 6,523.99 is: 9,785.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315.08 : 31,971.45 = 6,523.99 : x
  2. Step 2: Convert to fraction form
    21,315.08/31,971.45 = 6,523.99/x
  3. Step 3: Cross multiply
    21,315.08x = 31,971.45 × 6,523.99
  4. Step 4: Simplify right side
    21,315.08x = 208,581,260.23
  5. Step 5: Solve for x
    x = 208,581,260.23/21,315.08
  6. Step 6: Final answer
    x = 9,785.62

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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.