Home / 13,395.52-18,490.61-9,143.54

Finding the Fourth Proportional to 13,395.52, 18,490.61 and 9,143.54

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Solution

The fourth proportional to 13,395.52, 18,490.61 and 9,143.54 is: 12,621.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.52 : 18,490.61 = 9,143.54 : x
  2. Step 2: Convert to fraction form
    13,395.52/18,490.61 = 9,143.54/x
  3. Step 3: Cross multiply
    13,395.52x = 18,490.61 × 9,143.54
  4. Step 4: Simplify right side
    13,395.52x = 169,069,586.44
  5. Step 5: Solve for x
    x = 169,069,586.44/13,395.52
  6. Step 6: Final answer
    x = 12,621.35

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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.