Home / 28,357.16-42,542.10-8,637.28

Finding the Fourth Proportional to 28,357.16, 42,542.10 and 8,637.28

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Solution

The fourth proportional to 28,357.16, 42,542.10 and 8,637.28 is: 12,957.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.16 : 42,542.10 = 8,637.28 : x
  2. Step 2: Convert to fraction form
    28,357.16/42,542.10 = 8,637.28/x
  3. Step 3: Cross multiply
    28,357.16x = 42,542.10 × 8,637.28
  4. Step 4: Simplify right side
    28,357.16x = 367,448,029.49
  5. Step 5: Solve for x
    x = 367,448,029.49/28,357.16
  6. Step 6: Final answer
    x = 12,957.86

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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.