Home / 15,284.54-22,823.30-12,129.12

Finding the Fourth Proportional to 15,284.54, 22,823.30 and 12,129.12

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Solution

The fourth proportional to 15,284.54, 22,823.30 and 12,129.12 is: 18,111.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,284.54 : 22,823.30 = 12,129.12 : x
  2. Step 2: Convert to fraction form
    15,284.54/22,823.30 = 12,129.12/x
  3. Step 3: Cross multiply
    15,284.54x = 22,823.30 × 12,129.12
  4. Step 4: Simplify right side
    15,284.54x = 276,826,544.50
  5. Step 5: Solve for x
    x = 276,826,544.50/15,284.54
  6. Step 6: Final answer
    x = 18,111.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.