Home / 18,485.54-25,500.56-12,515.12

Finding the Fourth Proportional to 18,485.54, 25,500.56 and 12,515.12

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Solution

The fourth proportional to 18,485.54, 25,500.56 and 12,515.12 is: 17,264.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485.54 : 25,500.56 = 12,515.12 : x
  2. Step 2: Convert to fraction form
    18,485.54/25,500.56 = 12,515.12/x
  3. Step 3: Cross multiply
    18,485.54x = 25,500.56 × 12,515.12
  4. Step 4: Simplify right side
    18,485.54x = 319,142,568.47
  5. Step 5: Solve for x
    x = 319,142,568.47/18,485.54
  6. Step 6: Final answer
    x = 17,264.44

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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.