Home / 12,328.59-18,490.19-3,561.60

Finding the Fourth Proportional to 12,328.59, 18,490.19 and 3,561.60

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Solution

The fourth proportional to 12,328.59, 18,490.19 and 3,561.60 is: 5,341.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,328.59 : 18,490.19 = 3,561.60 : x
  2. Step 2: Convert to fraction form
    12,328.59/18,490.19 = 3,561.60/x
  3. Step 3: Cross multiply
    12,328.59x = 18,490.19 × 3,561.60
  4. Step 4: Simplify right side
    12,328.59x = 65,854,642.90
  5. Step 5: Solve for x
    x = 65,854,642.90/12,328.59
  6. Step 6: Final answer
    x = 5,341.62

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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.