Home / 20,454.53-28,241.26-15,666.01

Finding the Fourth Proportional to 20,454.53, 28,241.26 and 15,666.01

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Solution

The fourth proportional to 20,454.53, 28,241.26 and 15,666.01 is: 21,629.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,454.53 : 28,241.26 = 15,666.01 : x
  2. Step 2: Convert to fraction form
    20,454.53/28,241.26 = 15,666.01/x
  3. Step 3: Cross multiply
    20,454.53x = 28,241.26 × 15,666.01
  4. Step 4: Simplify right side
    20,454.53x = 442,427,751.80
  5. Step 5: Solve for x
    x = 442,427,751.80/20,454.53
  6. Step 6: Final answer
    x = 21,629.82

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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.