Home / 12,947.40-19,421.51-4,182.39

Finding the Fourth Proportional to 12,947.40, 19,421.51 and 4,182.39

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Solution

The fourth proportional to 12,947.40, 19,421.51 and 4,182.39 is: 6,273.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,947.40 : 19,421.51 = 4,182.39 : x
  2. Step 2: Convert to fraction form
    12,947.40/19,421.51 = 4,182.39/x
  3. Step 3: Cross multiply
    12,947.40x = 19,421.51 × 4,182.39
  4. Step 4: Simplify right side
    12,947.40x = 81,228,308.30
  5. Step 5: Solve for x
    x = 81,228,308.30/12,947.40
  6. Step 6: Final answer
    x = 6,273.72

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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.