Home / 13,400.30-18,490.66-7,657.60

Finding the Fourth Proportional to 13,400.30, 18,490.66 and 7,657.60

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Solution

The fourth proportional to 13,400.30, 18,490.66 and 7,657.60 is: 10,566.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,400.30 : 18,490.66 = 7,657.60 : x
  2. Step 2: Convert to fraction form
    13,400.30/18,490.66 = 7,657.60/x
  3. Step 3: Cross multiply
    13,400.30x = 18,490.66 × 7,657.60
  4. Step 4: Simplify right side
    13,400.30x = 141,594,078.02
  5. Step 5: Solve for x
    x = 141,594,078.02/13,400.30
  6. Step 6: Final answer
    x = 10,566.49

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1.5x scale

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.