Home / 21,652.90-29,881.36-12,700.64

Finding the Fourth Proportional to 21,652.90, 29,881.36 and 12,700.64

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Solution

The fourth proportional to 21,652.90, 29,881.36 and 12,700.64 is: 17,527.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,652.90 : 29,881.36 = 12,700.64 : x
  2. Step 2: Convert to fraction form
    21,652.90/29,881.36 = 12,700.64/x
  3. Step 3: Cross multiply
    21,652.90x = 29,881.36 × 12,700.64
  4. Step 4: Simplify right side
    21,652.90x = 379,512,396.07
  5. Step 5: Solve for x
    x = 379,512,396.07/21,652.90
  6. Step 6: Final answer
    x = 17,527.09

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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.