Home / 10,409.87-14,370.36-6,638.20

Finding the Fourth Proportional to 10,409.87, 14,370.36 and 6,638.20

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Solution

The fourth proportional to 10,409.87, 14,370.36 and 6,638.20 is: 9,163.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,409.87 : 14,370.36 = 6,638.20 : x
  2. Step 2: Convert to fraction form
    10,409.87/14,370.36 = 6,638.20/x
  3. Step 3: Cross multiply
    10,409.87x = 14,370.36 × 6,638.20
  4. Step 4: Simplify right side
    10,409.87x = 95,393,381.11
  5. Step 5: Solve for x
    x = 95,393,381.11/10,409.87
  6. Step 6: Final answer
    x = 9,163.75

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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.