Home / 18,511.10-25,545.11-10,127.50

Finding the Fourth Proportional to 18,511.10, 25,545.11 and 10,127.50

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Solution

The fourth proportional to 18,511.10, 25,545.11 and 10,127.50 is: 13,975.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,511.10 : 25,545.11 = 10,127.50 : x
  2. Step 2: Convert to fraction form
    18,511.10/25,545.11 = 10,127.50/x
  3. Step 3: Cross multiply
    18,511.10x = 25,545.11 × 10,127.50
  4. Step 4: Simplify right side
    18,511.10x = 258,708,101.53
  5. Step 5: Solve for x
    x = 258,708,101.53/18,511.10
  6. Step 6: Final answer
    x = 13,975.84

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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.