Home / 10,871.10-16,244.64-9,121.50

Finding the Fourth Proportional to 10,871.10, 16,244.64 and 9,121.50

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Solution

The fourth proportional to 10,871.10, 16,244.64 and 9,121.50 is: 13,630.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,871.10 : 16,244.64 = 9,121.50 : x
  2. Step 2: Convert to fraction form
    10,871.10/16,244.64 = 9,121.50/x
  3. Step 3: Cross multiply
    10,871.10x = 16,244.64 × 9,121.50
  4. Step 4: Simplify right side
    10,871.10x = 148,175,483.76
  5. Step 5: Solve for x
    x = 148,175,483.76/10,871.10
  6. Step 6: Final answer
    x = 13,630.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.