Home / 28,311.04-39,069.30-15,736.60

Finding the Fourth Proportional to 28,311.04, 39,069.30 and 15,736.60

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Solution

The fourth proportional to 28,311.04, 39,069.30 and 15,736.60 is: 21,716.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,311.04 : 39,069.30 = 15,736.60 : x
  2. Step 2: Convert to fraction form
    28,311.04/39,069.30 = 15,736.60/x
  3. Step 3: Cross multiply
    28,311.04x = 39,069.30 × 15,736.60
  4. Step 4: Simplify right side
    28,311.04x = 614,817,946.38
  5. Step 5: Solve for x
    x = 614,817,946.38/28,311.04
  6. Step 6: Final answer
    x = 21,716.54

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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.