Home / 20,877.88-28,795.57-17,972.35

Finding the Fourth Proportional to 20,877.88, 28,795.57 and 17,972.35

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Solution

The fourth proportional to 20,877.88, 28,795.57 and 17,972.35 is: 24,788.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.88 : 28,795.57 = 17,972.35 : x
  2. Step 2: Convert to fraction form
    20,877.88/28,795.57 = 17,972.35/x
  3. Step 3: Cross multiply
    20,877.88x = 28,795.57 × 17,972.35
  4. Step 4: Simplify right side
    20,877.88x = 517,523,972.63
  5. Step 5: Solve for x
    x = 517,523,972.63/20,877.88
  6. Step 6: Final answer
    x = 24,788.15

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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.