Home / 12,657.02-18,990.32-5,260.86

Finding the Fourth Proportional to 12,657.02, 18,990.32 and 5,260.86

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Solution

The fourth proportional to 12,657.02, 18,990.32 and 5,260.86 is: 7,893.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,657.02 : 18,990.32 = 5,260.86 : x
  2. Step 2: Convert to fraction form
    12,657.02/18,990.32 = 5,260.86/x
  3. Step 3: Cross multiply
    12,657.02x = 18,990.32 × 5,260.86
  4. Step 4: Simplify right side
    12,657.02x = 99,905,388.57
  5. Step 5: Solve for x
    x = 99,905,388.57/12,657.02
  6. Step 6: Final answer
    x = 7,893.28

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1.5x scale

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.