Home / 28,807.50-39,787.45-19,230.72

Finding the Fourth Proportional to 28,807.50, 39,787.45 and 19,230.72

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Solution

The fourth proportional to 28,807.50, 39,787.45 and 19,230.72 is: 26,560.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,807.50 : 39,787.45 = 19,230.72 : x
  2. Step 2: Convert to fraction form
    28,807.50/39,787.45 = 19,230.72/x
  3. Step 3: Cross multiply
    28,807.50x = 39,787.45 × 19,230.72
  4. Step 4: Simplify right side
    28,807.50x = 765,141,221.36
  5. Step 5: Solve for x
    x = 765,141,221.36/28,807.50
  6. Step 6: Final answer
    x = 26,560.49

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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.