Home / 28,242.72-42,328.80-17,857.44

Finding the Fourth Proportional to 28,242.72, 42,328.80 and 17,857.44

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Solution

The fourth proportional to 28,242.72, 42,328.80 and 17,857.44 is: 26,763.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,242.72 : 42,328.80 = 17,857.44 : x
  2. Step 2: Convert to fraction form
    28,242.72/42,328.80 = 17,857.44/x
  3. Step 3: Cross multiply
    28,242.72x = 42,328.80 × 17,857.44
  4. Step 4: Simplify right side
    28,242.72x = 755,884,006.27
  5. Step 5: Solve for x
    x = 755,884,006.27/28,242.72
  6. Step 6: Final answer
    x = 26,763.85

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1.5x scale

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.