Home / 10,928.40-16,409.10-8,730.60

Finding the Fourth Proportional to 10,928.40, 16,409.10 and 8,730.60

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Solution

The fourth proportional to 10,928.40, 16,409.10 and 8,730.60 is: 13,109.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,928.40 : 16,409.10 = 8,730.60 : x
  2. Step 2: Convert to fraction form
    10,928.40/16,409.10 = 8,730.60/x
  3. Step 3: Cross multiply
    10,928.40x = 16,409.10 × 8,730.60
  4. Step 4: Simplify right side
    10,928.40x = 143,261,288.46
  5. Step 5: Solve for x
    x = 143,261,288.46/10,928.40
  6. Step 6: Final answer
    x = 13,109.08

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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.