Home / 15,109.56-20,847.84-9,141.12

Finding the Fourth Proportional to 15,109.56, 20,847.84 and 9,141.12

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Solution

The fourth proportional to 15,109.56, 20,847.84 and 9,141.12 is: 12,612.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,109.56 : 20,847.84 = 9,141.12 : x
  2. Step 2: Convert to fraction form
    15,109.56/20,847.84 = 9,141.12/x
  3. Step 3: Cross multiply
    15,109.56x = 20,847.84 × 9,141.12
  4. Step 4: Simplify right side
    15,109.56x = 190,572,607.18
  5. Step 5: Solve for x
    x = 190,572,607.18/15,109.56
  6. Step 6: Final answer
    x = 12,612.72

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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.