Home / 10,876.20-16,271.10-9,431.40

Finding the Fourth Proportional to 10,876.20, 16,271.10 and 9,431.40

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Solution

The fourth proportional to 10,876.20, 16,271.10 and 9,431.40 is: 14,109.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,876.20 : 16,271.10 = 9,431.40 : x
  2. Step 2: Convert to fraction form
    10,876.20/16,271.10 = 9,431.40/x
  3. Step 3: Cross multiply
    10,876.20x = 16,271.10 × 9,431.40
  4. Step 4: Simplify right side
    10,876.20x = 153,459,252.54
  5. Step 5: Solve for x
    x = 153,459,252.54/10,876.20
  6. Step 6: Final answer
    x = 14,109.64

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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.