Home / 20,672.10-28,526.67-11,721.51

Finding the Fourth Proportional to 20,672.10, 28,526.67 and 11,721.51

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Solution

The fourth proportional to 20,672.10, 28,526.67 and 11,721.51 is: 16,175.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.10 : 28,526.67 = 11,721.51 : x
  2. Step 2: Convert to fraction form
    20,672.10/28,526.67 = 11,721.51/x
  3. Step 3: Cross multiply
    20,672.10x = 28,526.67 × 11,721.51
  4. Step 4: Simplify right side
    20,672.10x = 334,375,647.67
  5. Step 5: Solve for x
    x = 334,375,647.67/20,672.10
  6. Step 6: Final answer
    x = 16,175.21

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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.