Home / 28,399.32-39,188.90-16,464.28

Finding the Fourth Proportional to 28,399.32, 39,188.90 and 16,464.28

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Solution

The fourth proportional to 28,399.32, 39,188.90 and 16,464.28 is: 22,719.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,399.32 : 39,188.90 = 16,464.28 : x
  2. Step 2: Convert to fraction form
    28,399.32/39,188.90 = 16,464.28/x
  3. Step 3: Cross multiply
    28,399.32x = 39,188.90 × 16,464.28
  4. Step 4: Simplify right side
    28,399.32x = 645,217,022.49
  5. Step 5: Solve for x
    x = 645,217,022.49/28,399.32
  6. Step 6: Final answer
    x = 22,719.45

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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.