Home / 18,339.90-25,316.19-12,054.30

Finding the Fourth Proportional to 18,339.90, 25,316.19 and 12,054.30

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Solution

The fourth proportional to 18,339.90, 25,316.19 and 12,054.30 is: 16,639.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,339.90 : 25,316.19 = 12,054.30 : x
  2. Step 2: Convert to fraction form
    18,339.90/25,316.19 = 12,054.30/x
  3. Step 3: Cross multiply
    18,339.90x = 25,316.19 × 12,054.30
  4. Step 4: Simplify right side
    18,339.90x = 305,168,949.12
  5. Step 5: Solve for x
    x = 305,168,949.12/18,339.90
  6. Step 6: Final answer
    x = 16,639.62

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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.