Home / 21,210.53-31,820.90-14,982.66

Finding the Fourth Proportional to 21,210.53, 31,820.90 and 14,982.66

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Solution

The fourth proportional to 21,210.53, 31,820.90 and 14,982.66 is: 22,477.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.53 : 31,820.90 = 14,982.66 : x
  2. Step 2: Convert to fraction form
    21,210.53/31,820.90 = 14,982.66/x
  3. Step 3: Cross multiply
    21,210.53x = 31,820.90 × 14,982.66
  4. Step 4: Simplify right side
    21,210.53x = 476,761,650.68
  5. Step 5: Solve for x
    x = 476,761,650.68/21,210.53
  6. Step 6: Final answer
    x = 22,477.60

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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.