Home / 12,657.13-18,985.69-3,423.13

Finding the Fourth Proportional to 12,657.13, 18,985.69 and 3,423.13

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Solution

The fourth proportional to 12,657.13, 18,985.69 and 3,423.13 is: 5,134.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,657.13 : 18,985.69 = 3,423.13 : x
  2. Step 2: Convert to fraction form
    12,657.13/18,985.69 = 3,423.13/x
  3. Step 3: Cross multiply
    12,657.13x = 18,985.69 × 3,423.13
  4. Step 4: Simplify right side
    12,657.13x = 64,990,485.01
  5. Step 5: Solve for x
    x = 64,990,485.01/12,657.13
  6. Step 6: Final answer
    x = 5,134.69

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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.