Home / 15,493.80-21,372.54-9,521.22

Finding the Fourth Proportional to 15,493.80, 21,372.54 and 9,521.22

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Solution

The fourth proportional to 15,493.80, 21,372.54 and 9,521.22 is: 13,133.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,493.80 : 21,372.54 = 9,521.22 : x
  2. Step 2: Convert to fraction form
    15,493.80/21,372.54 = 9,521.22/x
  3. Step 3: Cross multiply
    15,493.80x = 21,372.54 × 9,521.22
  4. Step 4: Simplify right side
    15,493.80x = 203,492,655.30
  5. Step 5: Solve for x
    x = 203,492,655.30/15,493.80
  6. Step 6: Final answer
    x = 13,133.81

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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.