Home / 28,619.42-42,928.65-7,842.92

Finding the Fourth Proportional to 28,619.42, 42,928.65 and 7,842.92

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Solution

The fourth proportional to 28,619.42, 42,928.65 and 7,842.92 is: 11,764.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,619.42 : 42,928.65 = 7,842.92 : x
  2. Step 2: Convert to fraction form
    28,619.42/42,928.65 = 7,842.92/x
  3. Step 3: Cross multiply
    28,619.42x = 42,928.65 × 7,842.92
  4. Step 4: Simplify right side
    28,619.42x = 336,685,753.01
  5. Step 5: Solve for x
    x = 336,685,753.01/28,619.42
  6. Step 6: Final answer
    x = 11,764.24

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1.5x scale

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.