Home / 17,121.72-25,686.18-9,729.60

Finding the Fourth Proportional to 17,121.72, 25,686.18 and 9,729.60

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Solution

The fourth proportional to 17,121.72, 25,686.18 and 9,729.60 is: 14,596.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,121.72 : 25,686.18 = 9,729.60 : x
  2. Step 2: Convert to fraction form
    17,121.72/25,686.18 = 9,729.60/x
  3. Step 3: Cross multiply
    17,121.72x = 25,686.18 × 9,729.60
  4. Step 4: Simplify right side
    17,121.72x = 249,916,256.93
  5. Step 5: Solve for x
    x = 249,916,256.93/17,121.72
  6. Step 6: Final answer
    x = 14,596.45

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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.