Home / 15,187.67-20,960.81-8,900.04

Finding the Fourth Proportional to 15,187.67, 20,960.81 and 8,900.04

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Solution

The fourth proportional to 15,187.67, 20,960.81 and 8,900.04 is: 12,283.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187.67 : 20,960.81 = 8,900.04 : x
  2. Step 2: Convert to fraction form
    15,187.67/20,960.81 = 8,900.04/x
  3. Step 3: Cross multiply
    15,187.67x = 20,960.81 × 8,900.04
  4. Step 4: Simplify right side
    15,187.67x = 186,552,047.43
  5. Step 5: Solve for x
    x = 186,552,047.43/15,187.67
  6. Step 6: Final answer
    x = 12,283.12

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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.