Home / 21,522.16-29,699.22-12,572.20

Finding the Fourth Proportional to 21,522.16, 29,699.22 and 12,572.20

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Solution

The fourth proportional to 21,522.16, 29,699.22 and 12,572.20 is: 17,348.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,522.16 : 29,699.22 = 12,572.20 : x
  2. Step 2: Convert to fraction form
    21,522.16/29,699.22 = 12,572.20/x
  3. Step 3: Cross multiply
    21,522.16x = 29,699.22 × 12,572.20
  4. Step 4: Simplify right side
    21,522.16x = 373,384,533.68
  5. Step 5: Solve for x
    x = 373,384,533.68/21,522.16
  6. Step 6: Final answer
    x = 17,348.84

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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.