Home / 18,271.45-25,215.51-11,101.42

Finding the Fourth Proportional to 18,271.45, 25,215.51 and 11,101.42

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Solution

The fourth proportional to 18,271.45, 25,215.51 and 11,101.42 is: 15,320.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,271.45 : 25,215.51 = 11,101.42 : x
  2. Step 2: Convert to fraction form
    18,271.45/25,215.51 = 11,101.42/x
  3. Step 3: Cross multiply
    18,271.45x = 25,215.51 × 11,101.42
  4. Step 4: Simplify right side
    18,271.45x = 279,927,967.02
  5. Step 5: Solve for x
    x = 279,927,967.02/18,271.45
  6. Step 6: Final answer
    x = 15,320.51

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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.