Home / 30,314.72-45,422.64-18,603.20

Finding the Fourth Proportional to 30,314.72, 45,422.64 and 18,603.20

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Solution

The fourth proportional to 30,314.72, 45,422.64 and 18,603.20 is: 27,874.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,314.72 : 45,422.64 = 18,603.20 : x
  2. Step 2: Convert to fraction form
    30,314.72/45,422.64 = 18,603.20/x
  3. Step 3: Cross multiply
    30,314.72x = 45,422.64 × 18,603.20
  4. Step 4: Simplify right side
    30,314.72x = 845,006,456.45
  5. Step 5: Solve for x
    x = 845,006,456.45/30,314.72
  6. Step 6: Final answer
    x = 27,874.46

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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.