Home / 14,412.80-19,890.24-8,445.44

Finding the Fourth Proportional to 14,412.80, 19,890.24 and 8,445.44

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Solution

The fourth proportional to 14,412.80, 19,890.24 and 8,445.44 is: 11,655.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,412.80 : 19,890.24 = 8,445.44 : x
  2. Step 2: Convert to fraction form
    14,412.80/19,890.24 = 8,445.44/x
  3. Step 3: Cross multiply
    14,412.80x = 19,890.24 × 8,445.44
  4. Step 4: Simplify right side
    14,412.80x = 167,981,828.51
  5. Step 5: Solve for x
    x = 167,981,828.51/14,412.80
  6. Step 6: Final answer
    x = 11,655.04

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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.