Home / 20,400.21-30,603.40-7,249.46

Finding the Fourth Proportional to 20,400.21, 30,603.40 and 7,249.46

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Solution

The fourth proportional to 20,400.21, 30,603.40 and 7,249.46 is: 10,875.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400.21 : 30,603.40 = 7,249.46 : x
  2. Step 2: Convert to fraction form
    20,400.21/30,603.40 = 7,249.46/x
  3. Step 3: Cross multiply
    20,400.21x = 30,603.40 × 7,249.46
  4. Step 4: Simplify right side
    20,400.21x = 221,857,953.02
  5. Step 5: Solve for x
    x = 221,857,953.02/20,400.21
  6. Step 6: Final answer
    x = 10,875.28

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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.