Home / 10,988.63-15,163.85-6,450.68

Finding the Fourth Proportional to 10,988.63, 15,163.85 and 6,450.68

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Solution

The fourth proportional to 10,988.63, 15,163.85 and 6,450.68 is: 8,901.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,988.63 : 15,163.85 = 6,450.68 : x
  2. Step 2: Convert to fraction form
    10,988.63/15,163.85 = 6,450.68/x
  3. Step 3: Cross multiply
    10,988.63x = 15,163.85 × 6,450.68
  4. Step 4: Simplify right side
    10,988.63x = 97,817,197.95
  5. Step 5: Solve for x
    x = 97,817,197.95/10,988.63
  6. Step 6: Final answer
    x = 8,901.67

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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.