Home / 20,643.06-28,487.34-11,690.58

Finding the Fourth Proportional to 20,643.06, 28,487.34 and 11,690.58

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Solution

The fourth proportional to 20,643.06, 28,487.34 and 11,690.58 is: 16,132.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,643.06 : 28,487.34 = 11,690.58 : x
  2. Step 2: Convert to fraction form
    20,643.06/28,487.34 = 11,690.58/x
  3. Step 3: Cross multiply
    20,643.06x = 28,487.34 × 11,690.58
  4. Step 4: Simplify right side
    20,643.06x = 333,033,527.26
  5. Step 5: Solve for x
    x = 333,033,527.26/20,643.06
  6. Step 6: Final answer
    x = 16,132.95

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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.