Home / 13,447.37-18,555.84-7,478.67

Finding the Fourth Proportional to 13,447.37, 18,555.84 and 7,478.67

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Solution

The fourth proportional to 13,447.37, 18,555.84 and 7,478.67 is: 10,319.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.37 : 18,555.84 = 7,478.67 : x
  2. Step 2: Convert to fraction form
    13,447.37/18,555.84 = 7,478.67/x
  3. Step 3: Cross multiply
    13,447.37x = 18,555.84 × 7,478.67
  4. Step 4: Simplify right side
    13,447.37x = 138,773,003.93
  5. Step 5: Solve for x
    x = 138,773,003.93/13,447.37
  6. Step 6: Final answer
    x = 10,319.72

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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.