Home / 20,784,806.36-31,178,953.67-7,657,798.13

Finding the Fourth Proportional to 20,784,806.36, 31,178,953.67 and 7,657,798.13

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Solution

The fourth proportional to 20,784,806.36, 31,178,953.67 and 7,657,798.13 is: 11,487,339.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784,806.36 : 31,178,953.67 = 7,657,798.13 : x
  2. Step 2: Convert to fraction form
    20,784,806.36/31,178,953.67 = 7,657,798.13/x
  3. Step 3: Cross multiply
    20,784,806.36x = 31,178,953.67 × 7,657,798.13
  4. Step 4: Simplify right side
    20,784,806.36x = 238,762,132,915,298.88
  5. Step 5: Solve for x
    x = 238,762,132,915,298.88/20,784,806.36
  6. Step 6: Final answer
    x = 11,487,339.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.