Home / 14,343.89-19,798.70-8,678.66

Finding the Fourth Proportional to 14,343.89, 19,798.70 and 8,678.66

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Solution

The fourth proportional to 14,343.89, 19,798.70 and 8,678.66 is: 11,979.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,343.89 : 19,798.70 = 8,678.66 : x
  2. Step 2: Convert to fraction form
    14,343.89/19,798.70 = 8,678.66/x
  3. Step 3: Cross multiply
    14,343.89x = 19,798.70 × 8,678.66
  4. Step 4: Simplify right side
    14,343.89x = 171,826,043.36
  5. Step 5: Solve for x
    x = 171,826,043.36/14,343.89
  6. Step 6: Final answer
    x = 11,979.04

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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.