Home / 15,785,784-21,784,381.92-8,542,440

Finding the Fourth Proportional to 15,785,784, 21,784,381.92 and 8,542,440

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Solution

The fourth proportional to 15,785,784, 21,784,381.92 and 8,542,440 is: 11,788,567.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,785,784 : 21,784,381.92 = 8,542,440 : x
  2. Step 2: Convert to fraction form
    15,785,784/21,784,381.92 = 8,542,440/x
  3. Step 3: Cross multiply
    15,785,784x = 21,784,381.92 × 8,542,440
  4. Step 4: Simplify right side
    15,785,784x = 186,091,775,488,684.81
  5. Step 5: Solve for x
    x = 186,091,775,488,684.81/15,785,784
  6. Step 6: Final answer
    x = 11,788,567.20

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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.