Home / 13,511.24-18,645.34-7,543.01

Finding the Fourth Proportional to 13,511.24, 18,645.34 and 7,543.01

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Solution

The fourth proportional to 13,511.24, 18,645.34 and 7,543.01 is: 10,409.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,511.24 : 18,645.34 = 7,543.01 : x
  2. Step 2: Convert to fraction form
    13,511.24/18,645.34 = 7,543.01/x
  3. Step 3: Cross multiply
    13,511.24x = 18,645.34 × 7,543.01
  4. Step 4: Simplify right side
    13,511.24x = 140,641,855.13
  5. Step 5: Solve for x
    x = 140,641,855.13/13,511.24
  6. Step 6: Final answer
    x = 10,409.25

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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.