Home / 15,415.27-23,128.70-9,178.87

Finding the Fourth Proportional to 15,415.27, 23,128.70 and 9,178.87

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Solution

The fourth proportional to 15,415.27, 23,128.70 and 9,178.87 is: 13,771.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.27 : 23,128.70 = 9,178.87 : x
  2. Step 2: Convert to fraction form
    15,415.27/23,128.70 = 9,178.87/x
  3. Step 3: Cross multiply
    15,415.27x = 23,128.70 × 9,178.87
  4. Step 4: Simplify right side
    15,415.27x = 212,295,330.57
  5. Step 5: Solve for x
    x = 212,295,330.57/15,415.27
  6. Step 6: Final answer
    x = 13,771.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.