Home / 28,838.72-39,807.84-18,235.52

Finding the Fourth Proportional to 28,838.72, 39,807.84 and 18,235.52

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Solution

The fourth proportional to 28,838.72, 39,807.84 and 18,235.52 is: 25,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,838.72 : 39,807.84 = 18,235.52 : x
  2. Step 2: Convert to fraction form
    28,838.72/39,807.84 = 18,235.52/x
  3. Step 3: Cross multiply
    28,838.72x = 39,807.84 × 18,235.52
  4. Step 4: Simplify right side
    28,838.72x = 725,916,662.48
  5. Step 5: Solve for x
    x = 725,916,662.48/28,838.72
  6. Step 6: Final answer
    x = 25,171.60

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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.