Home / 13,315.88-18,373.38-9,122.60

Finding the Fourth Proportional to 13,315.88, 18,373.38 and 9,122.60

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Solution

The fourth proportional to 13,315.88, 18,373.38 and 9,122.60 is: 12,587.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.88 : 18,373.38 = 9,122.60 : x
  2. Step 2: Convert to fraction form
    13,315.88/18,373.38 = 9,122.60/x
  3. Step 3: Cross multiply
    13,315.88x = 18,373.38 × 9,122.60
  4. Step 4: Simplify right side
    13,315.88x = 167,612,996.39
  5. Step 5: Solve for x
    x = 167,612,996.39/13,315.88
  6. Step 6: Final answer
    x = 12,587.45

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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.