Home / 28,935.32-39,931-16,188.76

Finding the Fourth Proportional to 28,935.32, 39,931 and 16,188.76

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Solution

The fourth proportional to 28,935.32, 39,931 and 16,188.76 is: 22,340.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,935.32 : 39,931 = 16,188.76 : x
  2. Step 2: Convert to fraction form
    28,935.32/39,931 = 16,188.76/x
  3. Step 3: Cross multiply
    28,935.32x = 39,931 × 16,188.76
  4. Step 4: Simplify right side
    28,935.32x = 646,433,375.56
  5. Step 5: Solve for x
    x = 646,433,375.56/28,935.32
  6. Step 6: Final answer
    x = 22,340.63

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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.