Home / 13,453.39-20,152.29-7,889.98

Finding the Fourth Proportional to 13,453.39, 20,152.29 and 7,889.98

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Solution

The fourth proportional to 13,453.39, 20,152.29 and 7,889.98 is: 11,818.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,453.39 : 20,152.29 = 7,889.98 : x
  2. Step 2: Convert to fraction form
    13,453.39/20,152.29 = 7,889.98/x
  3. Step 3: Cross multiply
    13,453.39x = 20,152.29 × 7,889.98
  4. Step 4: Simplify right side
    13,453.39x = 159,001,238.72
  5. Step 5: Solve for x
    x = 159,001,238.72/13,453.39
  6. Step 6: Final answer
    x = 11,818.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.