Home / 10,815.60-14,928.72-6,340.32

Finding the Fourth Proportional to 10,815.60, 14,928.72 and 6,340.32

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Solution

The fourth proportional to 10,815.60, 14,928.72 and 6,340.32 is: 8,751.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,815.60 : 14,928.72 = 6,340.32 : x
  2. Step 2: Convert to fraction form
    10,815.60/14,928.72 = 6,340.32/x
  3. Step 3: Cross multiply
    10,815.60x = 14,928.72 × 6,340.32
  4. Step 4: Simplify right side
    10,815.60x = 94,652,861.99
  5. Step 5: Solve for x
    x = 94,652,861.99/10,815.60
  6. Step 6: Final answer
    x = 8,751.51

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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.