Home / 18,989.02-26,203.08-11,031.13

Finding the Fourth Proportional to 18,989.02, 26,203.08 and 11,031.13

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Solution

The fourth proportional to 18,989.02, 26,203.08 and 11,031.13 is: 15,221.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.02 : 26,203.08 = 11,031.13 : x
  2. Step 2: Convert to fraction form
    18,989.02/26,203.08 = 11,031.13/x
  3. Step 3: Cross multiply
    18,989.02x = 26,203.08 × 11,031.13
  4. Step 4: Simplify right side
    18,989.02x = 289,049,581.88
  5. Step 5: Solve for x
    x = 289,049,581.88/18,989.02
  6. Step 6: Final answer
    x = 15,221.93

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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.