Home / 13,119,702.71-18,111,744.38-8,159,742.83

Finding the Fourth Proportional to 13,119,702.71, 18,111,744.38 and 8,159,742.83

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Solution

The fourth proportional to 13,119,702.71, 18,111,744.38 and 8,159,742.83 is: 11,264,521.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119,702.71 : 18,111,744.38 = 8,159,742.83 : x
  2. Step 2: Convert to fraction form
    13,119,702.71/18,111,744.38 = 8,159,742.83/x
  3. Step 3: Cross multiply
    13,119,702.71x = 18,111,744.38 × 8,159,742.83
  4. Step 4: Simplify right side
    13,119,702.71x = 147,787,176,212,140.38
  5. Step 5: Solve for x
    x = 147,787,176,212,140.38/13,119,702.71
  6. Step 6: Final answer
    x = 11,264,521.73

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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.