Home / 16,931.28-23,365.38-9,378.32

Finding the Fourth Proportional to 16,931.28, 23,365.38 and 9,378.32

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Solution

The fourth proportional to 16,931.28, 23,365.38 and 9,378.32 is: 12,942.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,931.28 : 23,365.38 = 9,378.32 : x
  2. Step 2: Convert to fraction form
    16,931.28/23,365.38 = 9,378.32/x
  3. Step 3: Cross multiply
    16,931.28x = 23,365.38 × 9,378.32
  4. Step 4: Simplify right side
    16,931.28x = 219,128,010.56
  5. Step 5: Solve for x
    x = 219,128,010.56/16,931.28
  6. Step 6: Final answer
    x = 12,942.20

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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.