Home / 13,408.58-18,503.55-7,440.19

Finding the Fourth Proportional to 13,408.58, 18,503.55 and 7,440.19

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Solution

The fourth proportional to 13,408.58, 18,503.55 and 7,440.19 is: 10,267.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.58 : 18,503.55 = 7,440.19 : x
  2. Step 2: Convert to fraction form
    13,408.58/18,503.55 = 7,440.19/x
  3. Step 3: Cross multiply
    13,408.58x = 18,503.55 × 7,440.19
  4. Step 4: Simplify right side
    13,408.58x = 137,669,927.67
  5. Step 5: Solve for x
    x = 137,669,927.67/13,408.58
  6. Step 6: Final answer
    x = 10,267.30

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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.