Home / 20,748.35-28,643.32-12,253.07

Finding the Fourth Proportional to 20,748.35, 28,643.32 and 12,253.07

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Solution

The fourth proportional to 20,748.35, 28,643.32 and 12,253.07 is: 16,915.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.35 : 28,643.32 = 12,253.07 : x
  2. Step 2: Convert to fraction form
    20,748.35/28,643.32 = 12,253.07/x
  3. Step 3: Cross multiply
    20,748.35x = 28,643.32 × 12,253.07
  4. Step 4: Simplify right side
    20,748.35x = 350,968,691.92
  5. Step 5: Solve for x
    x = 350,968,691.92/20,748.35
  6. Step 6: Final answer
    x = 16,915.50

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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.