Home / 31,068.21-42,874.63-16,921.06

Finding the Fourth Proportional to 31,068.21, 42,874.63 and 16,921.06

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Solution

The fourth proportional to 31,068.21, 42,874.63 and 16,921.06 is: 23,351.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,068.21 : 42,874.63 = 16,921.06 : x
  2. Step 2: Convert to fraction form
    31,068.21/42,874.63 = 16,921.06/x
  3. Step 3: Cross multiply
    31,068.21x = 42,874.63 × 16,921.06
  4. Step 4: Simplify right side
    31,068.21x = 725,484,132.40
  5. Step 5: Solve for x
    x = 725,484,132.40/31,068.21
  6. Step 6: Final answer
    x = 23,351.33

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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.