Home / 20,312.21-28,029.69-11,237.04

Finding the Fourth Proportional to 20,312.21, 28,029.69 and 11,237.04

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Solution

The fourth proportional to 20,312.21, 28,029.69 and 11,237.04 is: 15,506.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.21 : 28,029.69 = 11,237.04 : x
  2. Step 2: Convert to fraction form
    20,312.21/28,029.69 = 11,237.04/x
  3. Step 3: Cross multiply
    20,312.21x = 28,029.69 × 11,237.04
  4. Step 4: Simplify right side
    20,312.21x = 314,970,747.72
  5. Step 5: Solve for x
    x = 314,970,747.72/20,312.21
  6. Step 6: Final answer
    x = 15,506.47

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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.