Home / 21,239.57-29,267.41-16,430.30

Finding the Fourth Proportional to 21,239.57, 29,267.41 and 16,430.30

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Solution

The fourth proportional to 21,239.57, 29,267.41 and 16,430.30 is: 22,640.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,239.57 : 29,267.41 = 16,430.30 : x
  2. Step 2: Convert to fraction form
    21,239.57/29,267.41 = 16,430.30/x
  3. Step 3: Cross multiply
    21,239.57x = 29,267.41 × 16,430.30
  4. Step 4: Simplify right side
    21,239.57x = 480,872,358.62
  5. Step 5: Solve for x
    x = 480,872,358.62/21,239.57
  6. Step 6: Final answer
    x = 22,640.41

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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.