Home / 18,901.23-28,353.21-7,808.58

Finding the Fourth Proportional to 18,901.23, 28,353.21 and 7,808.58

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Solution

The fourth proportional to 18,901.23, 28,353.21 and 7,808.58 is: 11,713.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901.23 : 28,353.21 = 7,808.58 : x
  2. Step 2: Convert to fraction form
    18,901.23/28,353.21 = 7,808.58/x
  3. Step 3: Cross multiply
    18,901.23x = 28,353.21 × 7,808.58
  4. Step 4: Simplify right side
    18,901.23x = 221,398,279.26
  5. Step 5: Solve for x
    x = 221,398,279.26/18,901.23
  6. Step 6: Final answer
    x = 11,713.43

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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.