Home / 28,646.48-42,932.12-20,775.44

Finding the Fourth Proportional to 28,646.48, 42,932.12 and 20,775.44

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Solution

The fourth proportional to 28,646.48, 42,932.12 and 20,775.44 is: 31,135.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,646.48 : 42,932.12 = 20,775.44 : x
  2. Step 2: Convert to fraction form
    28,646.48/42,932.12 = 20,775.44/x
  3. Step 3: Cross multiply
    28,646.48x = 42,932.12 × 20,775.44
  4. Step 4: Simplify right side
    28,646.48x = 891,933,683.13
  5. Step 5: Solve for x
    x = 891,933,683.13/28,646.48
  6. Step 6: Final answer
    x = 31,135.89

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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.