Home / 20,440,441.23-28,200,685.83-13,102,320.63

Finding the Fourth Proportional to 20,440,441.23, 28,200,685.83 and 13,102,320.63

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Solution

The fourth proportional to 20,440,441.23, 28,200,685.83 and 13,102,320.63 is: 18,076,636.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440,441.23 : 28,200,685.83 = 13,102,320.63 : x
  2. Step 2: Convert to fraction form
    20,440,441.23/28,200,685.83 = 13,102,320.63/x
  3. Step 3: Cross multiply
    20,440,441.23x = 28,200,685.83 × 13,102,320.63
  4. Step 4: Simplify right side
    20,440,441.23x = 369,494,427,730,557.69
  5. Step 5: Solve for x
    x = 369,494,427,730,557.69/20,440,441.23
  6. Step 6: Final answer
    x = 18,076,636.58

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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.