Home / 12,646.75-18,970.45-4,326.72

Finding the Fourth Proportional to 12,646.75, 18,970.45 and 4,326.72

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Solution

The fourth proportional to 12,646.75, 18,970.45 and 4,326.72 is: 6,490.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,646.75 : 18,970.45 = 4,326.72 : x
  2. Step 2: Convert to fraction form
    12,646.75/18,970.45 = 4,326.72/x
  3. Step 3: Cross multiply
    12,646.75x = 18,970.45 × 4,326.72
  4. Step 4: Simplify right side
    12,646.75x = 82,079,767.81
  5. Step 5: Solve for x
    x = 82,079,767.81/12,646.75
  6. Step 6: Final answer
    x = 6,490.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.