Home / 21,709,990.23-29,960,763.80-13,007,976.02

Finding the Fourth Proportional to 21,709,990.23, 29,960,763.80 and 13,007,976.02

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Solution

The fourth proportional to 21,709,990.23, 29,960,763.80 and 13,007,976.02 is: 17,951,592.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,709,990.23 : 29,960,763.80 = 13,007,976.02 : x
  2. Step 2: Convert to fraction form
    21,709,990.23/29,960,763.80 = 13,007,976.02/x
  3. Step 3: Cross multiply
    21,709,990.23x = 29,960,763.80 × 13,007,976.02
  4. Step 4: Simplify right side
    21,709,990.23x = 389,728,897,051,284.06
  5. Step 5: Solve for x
    x = 389,728,897,051,284.06/21,709,990.23
  6. Step 6: Final answer
    x = 17,951,592.47

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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.