Home / 28,725.60-43,030.80-16,399.20

Finding the Fourth Proportional to 28,725.60, 43,030.80 and 16,399.20

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Solution

The fourth proportional to 28,725.60, 43,030.80 and 16,399.20 is: 24,565.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,725.60 : 43,030.80 = 16,399.20 : x
  2. Step 2: Convert to fraction form
    28,725.60/43,030.80 = 16,399.20/x
  3. Step 3: Cross multiply
    28,725.60x = 43,030.80 × 16,399.20
  4. Step 4: Simplify right side
    28,725.60x = 705,670,695.36
  5. Step 5: Solve for x
    x = 705,670,695.36/28,725.60
  6. Step 6: Final answer
    x = 24,565.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.