Home / 31,150.36-42,987.95-17,002.90

Finding the Fourth Proportional to 31,150.36, 42,987.95 and 17,002.90

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Solution

The fourth proportional to 31,150.36, 42,987.95 and 17,002.90 is: 23,464.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,150.36 : 42,987.95 = 17,002.90 : x
  2. Step 2: Convert to fraction form
    31,150.36/42,987.95 = 17,002.90/x
  3. Step 3: Cross multiply
    31,150.36x = 42,987.95 × 17,002.90
  4. Step 4: Simplify right side
    31,150.36x = 730,919,815.06
  5. Step 5: Solve for x
    x = 730,919,815.06/31,150.36
  6. Step 6: Final answer
    x = 23,464.25

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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.