Home / 20,956,826.40-28,920,376.40-11,789,469.16

Finding the Fourth Proportional to 20,956,826.40, 28,920,376.40 and 11,789,469.16

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Solution

The fourth proportional to 20,956,826.40, 28,920,376.40 and 11,789,469.16 is: 16,269,442.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956,826.40 : 28,920,376.40 = 11,789,469.16 : x
  2. Step 2: Convert to fraction form
    20,956,826.40/28,920,376.40 = 11,789,469.16/x
  3. Step 3: Cross multiply
    20,956,826.40x = 28,920,376.40 × 11,789,469.16
  4. Step 4: Simplify right side
    20,956,826.40x = 340,955,885,663,391.81
  5. Step 5: Solve for x
    x = 340,955,885,663,391.81/20,956,826.40
  6. Step 6: Final answer
    x = 16,269,442.67

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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.