Home / 28,505.80-42,763.38-8,784.36

Finding the Fourth Proportional to 28,505.80, 42,763.38 and 8,784.36

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Solution

The fourth proportional to 28,505.80, 42,763.38 and 8,784.36 is: 13,177.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,505.80 : 42,763.38 = 8,784.36 : x
  2. Step 2: Convert to fraction form
    28,505.80/42,763.38 = 8,784.36/x
  3. Step 3: Cross multiply
    28,505.80x = 42,763.38 × 8,784.36
  4. Step 4: Simplify right side
    28,505.80x = 375,648,924.74
  5. Step 5: Solve for x
    x = 375,648,924.74/28,505.80
  6. Step 6: Final answer
    x = 13,177.98

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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.