Home / 12,105.12-18,154.08-4,710.72

Finding the Fourth Proportional to 12,105.12, 18,154.08 and 4,710.72

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Solution

The fourth proportional to 12,105.12, 18,154.08 and 4,710.72 is: 7,064.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,105.12 : 18,154.08 = 4,710.72 : x
  2. Step 2: Convert to fraction form
    12,105.12/18,154.08 = 4,710.72/x
  3. Step 3: Cross multiply
    12,105.12x = 18,154.08 × 4,710.72
  4. Step 4: Simplify right side
    12,105.12x = 85,518,787.74
  5. Step 5: Solve for x
    x = 85,518,787.74/12,105.12
  6. Step 6: Final answer
    x = 7,064.68

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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.