Home / 20,569,812.48-28,389,233.04-12,731,838.77

Finding the Fourth Proportional to 20,569,812.48, 28,389,233.04 and 12,731,838.77

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Solution

The fourth proportional to 20,569,812.48, 28,389,233.04 and 12,731,838.77 is: 17,571,727.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569,812.48 : 28,389,233.04 = 12,731,838.77 : x
  2. Step 2: Convert to fraction form
    20,569,812.48/28,389,233.04 = 12,731,838.77/x
  3. Step 3: Cross multiply
    20,569,812.48x = 28,389,233.04 × 12,731,838.77
  4. Step 4: Simplify right side
    20,569,812.48x = 361,447,137,869,236.94
  5. Step 5: Solve for x
    x = 361,447,137,869,236.94/20,569,812.48
  6. Step 6: Final answer
    x = 17,571,727.41

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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.