Home / 20,435.76-28,200.72-11,483.04

Finding the Fourth Proportional to 20,435.76, 28,200.72 and 11,483.04

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Solution

The fourth proportional to 20,435.76, 28,200.72 and 11,483.04 is: 15,846.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.76 : 28,200.72 = 11,483.04 : x
  2. Step 2: Convert to fraction form
    20,435.76/28,200.72 = 11,483.04/x
  3. Step 3: Cross multiply
    20,435.76x = 28,200.72 × 11,483.04
  4. Step 4: Simplify right side
    20,435.76x = 323,829,995.79
  5. Step 5: Solve for x
    x = 323,829,995.79/20,435.76
  6. Step 6: Final answer
    x = 15,846.24

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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.