Home / 30,990.02-42,766.10-16,842.82

Finding the Fourth Proportional to 30,990.02, 42,766.10 and 16,842.82

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Solution

The fourth proportional to 30,990.02, 42,766.10 and 16,842.82 is: 23,243.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,990.02 : 42,766.10 = 16,842.82 : x
  2. Step 2: Convert to fraction form
    30,990.02/42,766.10 = 16,842.82/x
  3. Step 3: Cross multiply
    30,990.02x = 42,766.10 × 16,842.82
  4. Step 4: Simplify right side
    30,990.02x = 720,301,724.40
  5. Step 5: Solve for x
    x = 720,301,724.40/30,990.02
  6. Step 6: Final answer
    x = 23,243.02

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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.