Home / 14,320.80-19,764.78-8,656.38

Finding the Fourth Proportional to 14,320.80, 19,764.78 and 8,656.38

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Solution

The fourth proportional to 14,320.80, 19,764.78 and 8,656.38 is: 11,947.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,320.80 : 19,764.78 = 8,656.38 : x
  2. Step 2: Convert to fraction form
    14,320.80/19,764.78 = 8,656.38/x
  3. Step 3: Cross multiply
    14,320.80x = 19,764.78 × 8,656.38
  4. Step 4: Simplify right side
    14,320.80x = 171,091,446.30
  5. Step 5: Solve for x
    x = 171,091,446.30/14,320.80
  6. Step 6: Final answer
    x = 11,947.06

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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.