Home / 20,544.72-28,362.60-15,818.64

Finding the Fourth Proportional to 20,544.72, 28,362.60 and 15,818.64

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Solution

The fourth proportional to 20,544.72, 28,362.60 and 15,818.64 is: 21,838.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,544.72 : 28,362.60 = 15,818.64 : x
  2. Step 2: Convert to fraction form
    20,544.72/28,362.60 = 15,818.64/x
  3. Step 3: Cross multiply
    20,544.72x = 28,362.60 × 15,818.64
  4. Step 4: Simplify right side
    20,544.72x = 448,657,758.86
  5. Step 5: Solve for x
    x = 448,657,758.86/20,544.72
  6. Step 6: Final answer
    x = 21,838.11

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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.