Home / 12,155.54-18,235.76-4,658.55

Finding the Fourth Proportional to 12,155.54, 18,235.76 and 4,658.55

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Solution

The fourth proportional to 12,155.54, 18,235.76 and 4,658.55 is: 6,988.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,155.54 : 18,235.76 = 4,658.55 : x
  2. Step 2: Convert to fraction form
    12,155.54/18,235.76 = 4,658.55/x
  3. Step 3: Cross multiply
    12,155.54x = 18,235.76 × 4,658.55
  4. Step 4: Simplify right side
    12,155.54x = 84,952,176.46
  5. Step 5: Solve for x
    x = 84,952,176.46/12,155.54
  6. Step 6: Final answer
    x = 6,988.76

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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.