Home / 13,231,686.96-18,261,702.84-8,078,036.16

Finding the Fourth Proportional to 13,231,686.96, 18,261,702.84 and 8,078,036.16

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Solution

The fourth proportional to 13,231,686.96, 18,261,702.84 and 8,078,036.16 is: 11,148,895.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,231,686.96 : 18,261,702.84 = 8,078,036.16 : x
  2. Step 2: Convert to fraction form
    13,231,686.96/18,261,702.84 = 8,078,036.16/x
  3. Step 3: Cross multiply
    13,231,686.96x = 18,261,702.84 × 8,078,036.16
  4. Step 4: Simplify right side
    13,231,686.96x = 147,518,695,884,694.69
  5. Step 5: Solve for x
    x = 147,518,695,884,694.69/13,231,686.96
  6. Step 6: Final answer
    x = 11,148,895.55

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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.