Home / 21,652.13-29,880.41-12,220.76

Finding the Fourth Proportional to 21,652.13, 29,880.41 and 12,220.76

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Solution

The fourth proportional to 21,652.13, 29,880.41 and 12,220.76 is: 16,864.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,652.13 : 29,880.41 = 12,220.76 : x
  2. Step 2: Convert to fraction form
    21,652.13/29,880.41 = 12,220.76/x
  3. Step 3: Cross multiply
    21,652.13x = 29,880.41 × 12,220.76
  4. Step 4: Simplify right side
    21,652.13x = 365,161,108.81
  5. Step 5: Solve for x
    x = 365,161,108.81/21,652.13
  6. Step 6: Final answer
    x = 16,864.91

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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.