Home / 15,083.04-20,811.54-9,777.12

Finding the Fourth Proportional to 15,083.04, 20,811.54 and 9,777.12

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Solution

The fourth proportional to 15,083.04, 20,811.54 and 9,777.12 is: 13,490.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,083.04 : 20,811.54 = 9,777.12 : x
  2. Step 2: Convert to fraction form
    15,083.04/20,811.54 = 9,777.12/x
  3. Step 3: Cross multiply
    15,083.04x = 20,811.54 × 9,777.12
  4. Step 4: Simplify right side
    15,083.04x = 203,476,923.96
  5. Step 5: Solve for x
    x = 203,476,923.96/15,083.04
  6. Step 6: Final answer
    x = 13,490.45

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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.