Home / 10,928.12-15,080.88-6,212.40

Finding the Fourth Proportional to 10,928.12, 15,080.88 and 6,212.40

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Solution

The fourth proportional to 10,928.12, 15,080.88 and 6,212.40 is: 8,573.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,928.12 : 15,080.88 = 6,212.40 : x
  2. Step 2: Convert to fraction form
    10,928.12/15,080.88 = 6,212.40/x
  3. Step 3: Cross multiply
    10,928.12x = 15,080.88 × 6,212.40
  4. Step 4: Simplify right side
    10,928.12x = 93,688,458.91
  5. Step 5: Solve for x
    x = 93,688,458.91/10,928.12
  6. Step 6: Final answer
    x = 8,573.15

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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.