Home / 13,408.14-18,501.74-7,438.32

Finding the Fourth Proportional to 13,408.14, 18,501.74 and 7,438.32

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Solution

The fourth proportional to 13,408.14, 18,501.74 and 7,438.32 is: 10,264.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.14 : 18,501.74 = 7,438.32 : x
  2. Step 2: Convert to fraction form
    13,408.14/18,501.74 = 7,438.32/x
  3. Step 3: Cross multiply
    13,408.14x = 18,501.74 × 7,438.32
  4. Step 4: Simplify right side
    13,408.14x = 137,621,862.68
  5. Step 5: Solve for x
    x = 137,621,862.68/13,408.14
  6. Step 6: Final answer
    x = 10,264.05

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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.