Home / 11,218.64-15,472.62-9,871.34

Finding the Fourth Proportional to 11,218.64, 15,472.62 and 9,871.34

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Solution

The fourth proportional to 11,218.64, 15,472.62 and 9,871.34 is: 13,614.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,218.64 : 15,472.62 = 9,871.34 : x
  2. Step 2: Convert to fraction form
    11,218.64/15,472.62 = 9,871.34/x
  3. Step 3: Cross multiply
    11,218.64x = 15,472.62 × 9,871.34
  4. Step 4: Simplify right side
    11,218.64x = 152,735,492.71
  5. Step 5: Solve for x
    x = 152,735,492.71/11,218.64
  6. Step 6: Final answer
    x = 13,614.44

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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.