Home / 11,985.95-16,516.30-9,280.85

Finding the Fourth Proportional to 11,985.95, 16,516.30 and 9,280.85

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Solution

The fourth proportional to 11,985.95, 16,516.30 and 9,280.85 is: 12,788.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.95 : 16,516.30 = 9,280.85 : x
  2. Step 2: Convert to fraction form
    11,985.95/16,516.30 = 9,280.85/x
  3. Step 3: Cross multiply
    11,985.95x = 16,516.30 × 9,280.85
  4. Step 4: Simplify right side
    11,985.95x = 153,285,302.86
  5. Step 5: Solve for x
    x = 153,285,302.86/11,985.95
  6. Step 6: Final answer
    x = 12,788.75

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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.