Home / 19,721.10-27,217.53-11,225.30

Finding the Fourth Proportional to 19,721.10, 27,217.53 and 11,225.30

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Solution

The fourth proportional to 19,721.10, 27,217.53 and 11,225.30 is: 15,492.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.10 : 27,217.53 = 11,225.30 : x
  2. Step 2: Convert to fraction form
    19,721.10/27,217.53 = 11,225.30/x
  3. Step 3: Cross multiply
    19,721.10x = 27,217.53 × 11,225.30
  4. Step 4: Simplify right side
    19,721.10x = 305,524,803.42
  5. Step 5: Solve for x
    x = 305,524,803.42/19,721.10
  6. Step 6: Final answer
    x = 15,492.28

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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.