Home / 21,045.24-31,559.22-7,890.84

Finding the Fourth Proportional to 21,045.24, 31,559.22 and 7,890.84

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Solution

The fourth proportional to 21,045.24, 31,559.22 and 7,890.84 is: 11,833.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.24 : 31,559.22 = 7,890.84 : x
  2. Step 2: Convert to fraction form
    21,045.24/31,559.22 = 7,890.84/x
  3. Step 3: Cross multiply
    21,045.24x = 31,559.22 × 7,890.84
  4. Step 4: Simplify right side
    21,045.24x = 249,028,755.54
  5. Step 5: Solve for x
    x = 249,028,755.54/21,045.24
  6. Step 6: Final answer
    x = 11,833.02

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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.