Home / 13,638.95-20,420.33-7,376.52

Finding the Fourth Proportional to 13,638.95, 20,420.33 and 7,376.52

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Solution

The fourth proportional to 13,638.95, 20,420.33 and 7,376.52 is: 11,044.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.95 : 20,420.33 = 7,376.52 : x
  2. Step 2: Convert to fraction form
    13,638.95/20,420.33 = 7,376.52/x
  3. Step 3: Cross multiply
    13,638.95x = 20,420.33 × 7,376.52
  4. Step 4: Simplify right side
    13,638.95x = 150,630,935.77
  5. Step 5: Solve for x
    x = 150,630,935.77/13,638.95
  6. Step 6: Final answer
    x = 11,044.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.