Home / 18,312.18-27,436.90-9,998.02

Finding the Fourth Proportional to 18,312.18, 27,436.90 and 9,998.02

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Solution

The fourth proportional to 18,312.18, 27,436.90 and 9,998.02 is: 14,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.18 : 27,436.90 = 9,998.02 : x
  2. Step 2: Convert to fraction form
    18,312.18/27,436.90 = 9,998.02/x
  3. Step 3: Cross multiply
    18,312.18x = 27,436.90 × 9,998.02
  4. Step 4: Simplify right side
    18,312.18x = 274,314,674.94
  5. Step 5: Solve for x
    x = 274,314,674.94/18,312.18
  6. Step 6: Final answer
    x = 14,979.90

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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.