Home / 22,742.32-31,382.32-13,311.60

Finding the Fourth Proportional to 22,742.32, 31,382.32 and 13,311.60

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Solution

The fourth proportional to 22,742.32, 31,382.32 and 13,311.60 is: 18,368.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,742.32 : 31,382.32 = 13,311.60 : x
  2. Step 2: Convert to fraction form
    22,742.32/31,382.32 = 13,311.60/x
  3. Step 3: Cross multiply
    22,742.32x = 31,382.32 × 13,311.60
  4. Step 4: Simplify right side
    22,742.32x = 417,748,890.91
  5. Step 5: Solve for x
    x = 417,748,890.91/22,742.32
  6. Step 6: Final answer
    x = 18,368.79

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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.