Home / 28,503.80-42,760.38-8,782.36

Finding the Fourth Proportional to 28,503.80, 42,760.38 and 8,782.36

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Solution

The fourth proportional to 28,503.80, 42,760.38 and 8,782.36 is: 13,174.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,503.80 : 42,760.38 = 8,782.36 : x
  2. Step 2: Convert to fraction form
    28,503.80/42,760.38 = 8,782.36/x
  3. Step 3: Cross multiply
    28,503.80x = 42,760.38 × 8,782.36
  4. Step 4: Simplify right side
    28,503.80x = 375,537,050.90
  5. Step 5: Solve for x
    x = 375,537,050.90/28,503.80
  6. Step 6: Final answer
    x = 13,174.98

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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.