Home / 28,968,821.42-39,976,330.63-15,737,656.40

Finding the Fourth Proportional to 28,968,821.42, 39,976,330.63 and 15,737,656.40

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Solution

The fourth proportional to 28,968,821.42, 39,976,330.63 and 15,737,656.40 is: 21,717,616.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,968,821.42 : 39,976,330.63 = 15,737,656.40 : x
  2. Step 2: Convert to fraction form
    28,968,821.42/39,976,330.63 = 15,737,656.40/x
  3. Step 3: Cross multiply
    28,968,821.42x = 39,976,330.63 × 15,737,656.40
  4. Step 4: Simplify right side
    28,968,821.42x = 629,133,755,527,929.12
  5. Step 5: Solve for x
    x = 629,133,755,527,929.12/28,968,821.42
  6. Step 6: Final answer
    x = 21,717,616.55

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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.