Home / 13,407.26-18,501.32-7,438.77

Finding the Fourth Proportional to 13,407.26, 18,501.32 and 7,438.77

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Solution

The fourth proportional to 13,407.26, 18,501.32 and 7,438.77 is: 10,265.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407.26 : 18,501.32 = 7,438.77 : x
  2. Step 2: Convert to fraction form
    13,407.26/18,501.32 = 7,438.77/x
  3. Step 3: Cross multiply
    13,407.26x = 18,501.32 × 7,438.77
  4. Step 4: Simplify right side
    13,407.26x = 137,627,064.18
  5. Step 5: Solve for x
    x = 137,627,064.18/13,407.26
  6. Step 6: Final answer
    x = 10,265.11

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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.