Home / 13,315.15-18,374.64-7,346.97

Finding the Fourth Proportional to 13,315.15, 18,374.64 and 7,346.97

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Solution

The fourth proportional to 13,315.15, 18,374.64 and 7,346.97 is: 10,138.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.15 : 18,374.64 = 7,346.97 : x
  2. Step 2: Convert to fraction form
    13,315.15/18,374.64 = 7,346.97/x
  3. Step 3: Cross multiply
    13,315.15x = 18,374.64 × 7,346.97
  4. Step 4: Simplify right side
    13,315.15x = 134,997,928.84
  5. Step 5: Solve for x
    x = 134,997,928.84/13,315.15
  6. Step 6: Final answer
    x = 10,138.67

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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.