Home / 13,406.76-18,501.48-7,438.60

Finding the Fourth Proportional to 13,406.76, 18,501.48 and 7,438.60

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Solution

The fourth proportional to 13,406.76, 18,501.48 and 7,438.60 is: 10,265.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.76 : 18,501.48 = 7,438.60 : x
  2. Step 2: Convert to fraction form
    13,406.76/18,501.48 = 7,438.60/x
  3. Step 3: Cross multiply
    13,406.76x = 18,501.48 × 7,438.60
  4. Step 4: Simplify right side
    13,406.76x = 137,625,109.13
  5. Step 5: Solve for x
    x = 137,625,109.13/13,406.76
  6. Step 6: Final answer
    x = 10,265.35

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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.