Home / 12,184.20-18,281.10-4,787.40

Finding the Fourth Proportional to 12,184.20, 18,281.10 and 4,787.40

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Solution

The fourth proportional to 12,184.20, 18,281.10 and 4,787.40 is: 7,182.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,184.20 : 18,281.10 = 4,787.40 : x
  2. Step 2: Convert to fraction form
    12,184.20/18,281.10 = 4,787.40/x
  3. Step 3: Cross multiply
    12,184.20x = 18,281.10 × 4,787.40
  4. Step 4: Simplify right side
    12,184.20x = 87,518,938.14
  5. Step 5: Solve for x
    x = 87,518,938.14/12,184.20
  6. Step 6: Final answer
    x = 7,182.99

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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.