Home / 22,890.76-31,572.91-21,008.41

Finding the Fourth Proportional to 22,890.76, 31,572.91 and 21,008.41

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Solution

The fourth proportional to 22,890.76, 31,572.91 and 21,008.41 is: 28,976.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,890.76 : 31,572.91 = 21,008.41 : x
  2. Step 2: Convert to fraction form
    22,890.76/31,572.91 = 21,008.41/x
  3. Step 3: Cross multiply
    22,890.76x = 31,572.91 × 21,008.41
  4. Step 4: Simplify right side
    22,890.76x = 663,296,638.17
  5. Step 5: Solve for x
    x = 663,296,638.17/22,890.76
  6. Step 6: Final answer
    x = 28,976.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.