Home / 30,989.25-42,764.85-16,842.15

Finding the Fourth Proportional to 30,989.25, 42,764.85 and 16,842.15

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Solution

The fourth proportional to 30,989.25, 42,764.85 and 16,842.15 is: 23,242.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,989.25 : 42,764.85 = 16,842.15 : x
  2. Step 2: Convert to fraction form
    30,989.25/42,764.85 = 16,842.15/x
  3. Step 3: Cross multiply
    30,989.25x = 42,764.85 × 16,842.15
  4. Step 4: Simplify right side
    30,989.25x = 720,252,018.43
  5. Step 5: Solve for x
    x = 720,252,018.43/30,989.25
  6. Step 6: Final answer
    x = 23,242.00

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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.