Home / 12,328.26-18,490.02-5,309.48

Finding the Fourth Proportional to 12,328.26, 18,490.02 and 5,309.48

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Solution

The fourth proportional to 12,328.26, 18,490.02 and 5,309.48 is: 7,963.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,328.26 : 18,490.02 = 5,309.48 : x
  2. Step 2: Convert to fraction form
    12,328.26/18,490.02 = 5,309.48/x
  3. Step 3: Cross multiply
    12,328.26x = 18,490.02 × 5,309.48
  4. Step 4: Simplify right side
    12,328.26x = 98,172,391.39
  5. Step 5: Solve for x
    x = 98,172,391.39/12,328.26
  6. Step 6: Final answer
    x = 7,963.20

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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.