Home / 31,801.20-43,907.04-28,433.28

Finding the Fourth Proportional to 31,801.20, 43,907.04 and 28,433.28

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Solution

The fourth proportional to 31,801.20, 43,907.04 and 28,433.28 is: 39,257.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,801.20 : 43,907.04 = 28,433.28 : x
  2. Step 2: Convert to fraction form
    31,801.20/43,907.04 = 28,433.28/x
  3. Step 3: Cross multiply
    31,801.20x = 43,907.04 × 28,433.28
  4. Step 4: Simplify right side
    31,801.20x = 1,248,421,162.29
  5. Step 5: Solve for x
    x = 1,248,421,162.29/31,801.20
  6. Step 6: Final answer
    x = 39,257.05

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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.