Home / 13,511.19-18,645.90-7,542.93

Finding the Fourth Proportional to 13,511.19, 18,645.90 and 7,542.93

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Solution

The fourth proportional to 13,511.19, 18,645.90 and 7,542.93 is: 10,409.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,511.19 : 18,645.90 = 7,542.93 : x
  2. Step 2: Convert to fraction form
    13,511.19/18,645.90 = 7,542.93/x
  3. Step 3: Cross multiply
    13,511.19x = 18,645.90 × 7,542.93
  4. Step 4: Simplify right side
    13,511.19x = 140,644,718.49
  5. Step 5: Solve for x
    x = 140,644,718.49/13,511.19
  6. Step 6: Final answer
    x = 10,409.50

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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.