Home / 31,028.36-42,819.10-16,881.30

Finding the Fourth Proportional to 31,028.36, 42,819.10 and 16,881.30

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Solution

The fourth proportional to 31,028.36, 42,819.10 and 16,881.30 is: 23,296.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,028.36 : 42,819.10 = 16,881.30 : x
  2. Step 2: Convert to fraction form
    31,028.36/42,819.10 = 16,881.30/x
  3. Step 3: Cross multiply
    31,028.36x = 42,819.10 × 16,881.30
  4. Step 4: Simplify right side
    31,028.36x = 722,842,030.63
  5. Step 5: Solve for x
    x = 722,842,030.63/31,028.36
  6. Step 6: Final answer
    x = 23,296.18

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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.