Home / 13,268,768.12-18,316,549.78-8,920,376.52

Finding the Fourth Proportional to 13,268,768.12, 18,316,549.78 and 8,920,376.52

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Solution

The fourth proportional to 13,268,768.12, 18,316,549.78 and 8,920,376.52 is: 12,313,917.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,268,768.12 : 18,316,549.78 = 8,920,376.52 : x
  2. Step 2: Convert to fraction form
    13,268,768.12/18,316,549.78 = 8,920,376.52/x
  3. Step 3: Cross multiply
    13,268,768.12x = 18,316,549.78 × 8,920,376.52
  4. Step 4: Simplify right side
    13,268,768.12x = 163,390,520,584,923.16
  5. Step 5: Solve for x
    x = 163,390,520,584,923.16/13,268,768.12
  6. Step 6: Final answer
    x = 12,313,917.85

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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.