Home / 28,380.08-42,538.26-9,642.62

Finding the Fourth Proportional to 28,380.08, 42,538.26 and 9,642.62

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Solution

The fourth proportional to 28,380.08, 42,538.26 and 9,642.62 is: 14,453.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,380.08 : 42,538.26 = 9,642.62 : x
  2. Step 2: Convert to fraction form
    28,380.08/42,538.26 = 9,642.62/x
  3. Step 3: Cross multiply
    28,380.08x = 42,538.26 × 9,642.62
  4. Step 4: Simplify right side
    28,380.08x = 410,180,276.64
  5. Step 5: Solve for x
    x = 410,180,276.64/28,380.08
  6. Step 6: Final answer
    x = 14,453.11

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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.