Home / 16,840.32-25,358.40-12,488.64

Finding the Fourth Proportional to 16,840.32, 25,358.40 and 12,488.64

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Solution

The fourth proportional to 16,840.32, 25,358.40 and 12,488.64 is: 18,805.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,840.32 : 25,358.40 = 12,488.64 : x
  2. Step 2: Convert to fraction form
    16,840.32/25,358.40 = 12,488.64/x
  3. Step 3: Cross multiply
    16,840.32x = 25,358.40 × 12,488.64
  4. Step 4: Simplify right side
    16,840.32x = 316,691,928.58
  5. Step 5: Solve for x
    x = 316,691,928.58/16,840.32
  6. Step 6: Final answer
    x = 18,805.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.