Home / 21,026.69-31,545.35-6,986.79

Finding the Fourth Proportional to 21,026.69, 31,545.35 and 6,986.79

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Solution

The fourth proportional to 21,026.69, 31,545.35 and 6,986.79 is: 10,481.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.69 : 31,545.35 = 6,986.79 : x
  2. Step 2: Convert to fraction form
    21,026.69/31,545.35 = 6,986.79/x
  3. Step 3: Cross multiply
    21,026.69x = 31,545.35 × 6,986.79
  4. Step 4: Simplify right side
    21,026.69x = 220,400,543.27
  5. Step 5: Solve for x
    x = 220,400,543.27/21,026.69
  6. Step 6: Final answer
    x = 10,481.94

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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.