Home / 20,563,838.69-28,381,222.94-13,124,712.15

Finding the Fourth Proportional to 20,563,838.69, 28,381,222.94 and 13,124,712.15

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Solution

The fourth proportional to 20,563,838.69, 28,381,222.94 and 13,124,712.15 is: 18,114,097.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563,838.69 : 28,381,222.94 = 13,124,712.15 : x
  2. Step 2: Convert to fraction form
    20,563,838.69/28,381,222.94 = 13,124,712.15/x
  3. Step 3: Cross multiply
    20,563,838.69x = 28,381,222.94 × 13,124,712.15
  4. Step 4: Simplify right side
    20,563,838.69x = 372,495,381,486,853.12
  5. Step 5: Solve for x
    x = 372,495,381,486,853.12/20,563,838.69
  6. Step 6: Final answer
    x = 18,114,097.63

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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.