Home / 30,753.36-42,441.47-18,819.02

Finding the Fourth Proportional to 30,753.36, 42,441.47 and 18,819.02

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Solution

The fourth proportional to 30,753.36, 42,441.47 and 18,819.02 is: 25,971.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,753.36 : 42,441.47 = 18,819.02 : x
  2. Step 2: Convert to fraction form
    30,753.36/42,441.47 = 18,819.02/x
  3. Step 3: Cross multiply
    30,753.36x = 42,441.47 × 18,819.02
  4. Step 4: Simplify right side
    30,753.36x = 798,706,566.46
  5. Step 5: Solve for x
    x = 798,706,566.46/30,753.36
  6. Step 6: Final answer
    x = 25,971.36

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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.