Home / 28,122.64-38,807.80-15,544.96

Finding the Fourth Proportional to 28,122.64, 38,807.80 and 15,544.96

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Solution

The fourth proportional to 28,122.64, 38,807.80 and 15,544.96 is: 21,451.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,122.64 : 38,807.80 = 15,544.96 : x
  2. Step 2: Convert to fraction form
    28,122.64/38,807.80 = 15,544.96/x
  3. Step 3: Cross multiply
    28,122.64x = 38,807.80 × 15,544.96
  4. Step 4: Simplify right side
    28,122.64x = 603,265,698.69
  5. Step 5: Solve for x
    x = 603,265,698.69/28,122.64
  6. Step 6: Final answer
    x = 21,451.25

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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.