Home / 13,478.57-18,600.45-7,511.42

Finding the Fourth Proportional to 13,478.57, 18,600.45 and 7,511.42

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Solution

The fourth proportional to 13,478.57, 18,600.45 and 7,511.42 is: 10,365.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,478.57 : 18,600.45 = 7,511.42 : x
  2. Step 2: Convert to fraction form
    13,478.57/18,600.45 = 7,511.42/x
  3. Step 3: Cross multiply
    13,478.57x = 18,600.45 × 7,511.42
  4. Step 4: Simplify right side
    13,478.57x = 139,715,699.14
  5. Step 5: Solve for x
    x = 139,715,699.14/13,478.57
  6. Step 6: Final answer
    x = 10,365.77

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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.