Home / 20,787.58-28,687.17-14,748.40

Finding the Fourth Proportional to 20,787.58, 28,687.17 and 14,748.40

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Solution

The fourth proportional to 20,787.58, 28,687.17 and 14,748.40 is: 20,353.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,787.58 : 28,687.17 = 14,748.40 : x
  2. Step 2: Convert to fraction form
    20,787.58/28,687.17 = 14,748.40/x
  3. Step 3: Cross multiply
    20,787.58x = 28,687.17 × 14,748.40
  4. Step 4: Simplify right side
    20,787.58x = 423,089,858.03
  5. Step 5: Solve for x
    x = 423,089,858.03/20,787.58
  6. Step 6: Final answer
    x = 20,353.01

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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.