Home / 13,432.63-20,152.36-7,890.66

Finding the Fourth Proportional to 13,432.63, 20,152.36 and 7,890.66

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Solution

The fourth proportional to 13,432.63, 20,152.36 and 7,890.66 is: 11,838.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,432.63 : 20,152.36 = 7,890.66 : x
  2. Step 2: Convert to fraction form
    13,432.63/20,152.36 = 7,890.66/x
  3. Step 3: Cross multiply
    13,432.63x = 20,152.36 × 7,890.66
  4. Step 4: Simplify right side
    13,432.63x = 159,015,401.23
  5. Step 5: Solve for x
    x = 159,015,401.23/13,432.63
  6. Step 6: Final answer
    x = 11,838.00

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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.