Home / 15,510,995.88-21,399,633.72-8,981,061

Finding the Fourth Proportional to 15,510,995.88, 21,399,633.72 and 8,981,061

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Solution

The fourth proportional to 15,510,995.88, 21,399,633.72 and 8,981,061 is: 12,390,656.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,510,995.88 : 21,399,633.72 = 8,981,061 : x
  2. Step 2: Convert to fraction form
    15,510,995.88/21,399,633.72 = 8,981,061/x
  3. Step 3: Cross multiply
    15,510,995.88x = 21,399,633.72 × 8,981,061
  4. Step 4: Simplify right side
    15,510,995.88x = 192,191,415,816,976.91
  5. Step 5: Solve for x
    x = 192,191,415,816,976.91/15,510,995.88
  6. Step 6: Final answer
    x = 12,390,656.11

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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.