Home / 30,943.02-42,691.56-18,192.12

Finding the Fourth Proportional to 30,943.02, 42,691.56 and 18,192.12

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Solution

The fourth proportional to 30,943.02, 42,691.56 and 18,192.12 is: 25,099.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,943.02 : 42,691.56 = 18,192.12 : x
  2. Step 2: Convert to fraction form
    30,943.02/42,691.56 = 18,192.12/x
  3. Step 3: Cross multiply
    30,943.02x = 42,691.56 × 18,192.12
  4. Step 4: Simplify right side
    30,943.02x = 776,649,982.51
  5. Step 5: Solve for x
    x = 776,649,982.51/30,943.02
  6. Step 6: Final answer
    x = 25,099.36

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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.