Home / 21,047,555.79-29,029,622.04-18,112,320.23

Finding the Fourth Proportional to 21,047,555.79, 29,029,622.04 and 18,112,320.23

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Solution

The fourth proportional to 21,047,555.79, 29,029,622.04 and 18,112,320.23 is: 24,981,228.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047,555.79 : 29,029,622.04 = 18,112,320.23 : x
  2. Step 2: Convert to fraction form
    21,047,555.79/29,029,622.04 = 18,112,320.23/x
  3. Step 3: Cross multiply
    21,047,555.79x = 29,029,622.04 × 18,112,320.23
  4. Step 4: Simplify right side
    21,047,555.79x = 525,793,810,399,197.81
  5. Step 5: Solve for x
    x = 525,793,810,399,197.81/21,047,555.79
  6. Step 6: Final answer
    x = 24,981,228.97

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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.