Home / 18,289.80-25,222.59-12,615.48

Finding the Fourth Proportional to 18,289.80, 25,222.59 and 12,615.48

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Solution

The fourth proportional to 18,289.80, 25,222.59 and 12,615.48 is: 17,397.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,289.80 : 25,222.59 = 12,615.48 : x
  2. Step 2: Convert to fraction form
    18,289.80/25,222.59 = 12,615.48/x
  3. Step 3: Cross multiply
    18,289.80x = 25,222.59 × 12,615.48
  4. Step 4: Simplify right side
    18,289.80x = 318,195,079.69
  5. Step 5: Solve for x
    x = 318,195,079.69/18,289.80
  6. Step 6: Final answer
    x = 17,397.41

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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.