Home / 18,787.04-28,184.32-8,398.72

Finding the Fourth Proportional to 18,787.04, 28,184.32 and 8,398.72

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Solution

The fourth proportional to 18,787.04, 28,184.32 and 8,398.72 is: 12,599.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.04 : 28,184.32 = 8,398.72 : x
  2. Step 2: Convert to fraction form
    18,787.04/28,184.32 = 8,398.72/x
  3. Step 3: Cross multiply
    18,787.04x = 28,184.32 × 8,398.72
  4. Step 4: Simplify right side
    18,787.04x = 236,712,212.07
  5. Step 5: Solve for x
    x = 236,712,212.07/18,787.04
  6. Step 6: Final answer
    x = 12,599.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.