Home / 20,539.08-28,344.06-11,107.62

Finding the Fourth Proportional to 20,539.08, 28,344.06 and 11,107.62

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Solution

The fourth proportional to 20,539.08, 28,344.06 and 11,107.62 is: 15,328.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539.08 : 28,344.06 = 11,107.62 : x
  2. Step 2: Convert to fraction form
    20,539.08/28,344.06 = 11,107.62/x
  3. Step 3: Cross multiply
    20,539.08x = 28,344.06 × 11,107.62
  4. Step 4: Simplify right side
    20,539.08x = 314,835,047.74
  5. Step 5: Solve for x
    x = 314,835,047.74/20,539.08
  6. Step 6: Final answer
    x = 15,328.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.