Home / 21,105,574.70-29,143,870.23-13,278,133.83

Finding the Fourth Proportional to 21,105,574.70, 29,143,870.23 and 13,278,133.83

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Solution

The fourth proportional to 21,105,574.70, 29,143,870.23 and 13,278,133.83 is: 18,335,260.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,105,574.70 : 29,143,870.23 = 13,278,133.83 : x
  2. Step 2: Convert to fraction form
    21,105,574.70/29,143,870.23 = 13,278,133.83/x
  3. Step 3: Cross multiply
    21,105,574.70x = 29,143,870.23 × 13,278,133.83
  4. Step 4: Simplify right side
    21,105,574.70x = 386,976,209,205,089.19
  5. Step 5: Solve for x
    x = 386,976,209,205,089.19/21,105,574.70
  6. Step 6: Final answer
    x = 18,335,260.46

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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.