Home / 11,243.40-16,865.10-9,688.20

Finding the Fourth Proportional to 11,243.40, 16,865.10 and 9,688.20

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Solution

The fourth proportional to 11,243.40, 16,865.10 and 9,688.20 is: 14,532.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,243.40 : 16,865.10 = 9,688.20 : x
  2. Step 2: Convert to fraction form
    11,243.40/16,865.10 = 9,688.20/x
  3. Step 3: Cross multiply
    11,243.40x = 16,865.10 × 9,688.20
  4. Step 4: Simplify right side
    11,243.40x = 163,392,461.82
  5. Step 5: Solve for x
    x = 163,392,461.82/11,243.40
  6. Step 6: Final answer
    x = 14,532.30

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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.