Home / 31,142.40-46,699.20-13,603.20

Finding the Fourth Proportional to 31,142.40, 46,699.20 and 13,603.20

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Solution

The fourth proportional to 31,142.40, 46,699.20 and 13,603.20 is: 20,398.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,142.40 : 46,699.20 = 13,603.20 : x
  2. Step 2: Convert to fraction form
    31,142.40/46,699.20 = 13,603.20/x
  3. Step 3: Cross multiply
    31,142.40x = 46,699.20 × 13,603.20
  4. Step 4: Simplify right side
    31,142.40x = 635,258,557.44
  5. Step 5: Solve for x
    x = 635,258,557.44/31,142.40
  6. Step 6: Final answer
    x = 20,398.51

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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.