Home / 18,855.12-26,018.40-10,355.84

Finding the Fourth Proportional to 18,855.12, 26,018.40 and 10,355.84

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Solution

The fourth proportional to 18,855.12, 26,018.40 and 10,355.84 is: 14,290.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.12 : 26,018.40 = 10,355.84 : x
  2. Step 2: Convert to fraction form
    18,855.12/26,018.40 = 10,355.84/x
  3. Step 3: Cross multiply
    18,855.12x = 26,018.40 × 10,355.84
  4. Step 4: Simplify right side
    18,855.12x = 269,442,387.46
  5. Step 5: Solve for x
    x = 269,442,387.46/18,855.12
  6. Step 6: Final answer
    x = 14,290.14

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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.