Home / 15,018.13-20,747-11,852.45

Finding the Fourth Proportional to 15,018.13, 20,747 and 11,852.45

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Solution

The fourth proportional to 15,018.13, 20,747 and 11,852.45 is: 16,373.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,018.13 : 20,747 = 11,852.45 : x
  2. Step 2: Convert to fraction form
    15,018.13/20,747 = 11,852.45/x
  3. Step 3: Cross multiply
    15,018.13x = 20,747 × 11,852.45
  4. Step 4: Simplify right side
    15,018.13x = 245,902,780.15
  5. Step 5: Solve for x
    x = 245,902,780.15/15,018.13
  6. Step 6: Final answer
    x = 16,373.73

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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.