Home / 20,216.13-27,915.45-12,675.09

Finding the Fourth Proportional to 20,216.13, 27,915.45 and 12,675.09

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Solution

The fourth proportional to 20,216.13, 27,915.45 and 12,675.09 is: 17,502.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.13 : 27,915.45 = 12,675.09 : x
  2. Step 2: Convert to fraction form
    20,216.13/27,915.45 = 12,675.09/x
  3. Step 3: Cross multiply
    20,216.13x = 27,915.45 × 12,675.09
  4. Step 4: Simplify right side
    20,216.13x = 353,830,841.14
  5. Step 5: Solve for x
    x = 353,830,841.14/20,216.13
  6. Step 6: Final answer
    x = 17,502.40

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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.