Home / 18,485.86-25,515.02-10,532.78

Finding the Fourth Proportional to 18,485.86, 25,515.02 and 10,532.78

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Solution

The fourth proportional to 18,485.86, 25,515.02 and 10,532.78 is: 14,537.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485.86 : 25,515.02 = 10,532.78 : x
  2. Step 2: Convert to fraction form
    18,485.86/25,515.02 = 10,532.78/x
  3. Step 3: Cross multiply
    18,485.86x = 25,515.02 × 10,532.78
  4. Step 4: Simplify right side
    18,485.86x = 268,743,991.11
  5. Step 5: Solve for x
    x = 268,743,991.11/18,485.86
  6. Step 6: Final answer
    x = 14,537.81

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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.