Home / 30,787.22-42,486.30-16,640.03

Finding the Fourth Proportional to 30,787.22, 42,486.30 and 16,640.03

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Solution

The fourth proportional to 30,787.22, 42,486.30 and 16,640.03 is: 22,963.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,787.22 : 42,486.30 = 16,640.03 : x
  2. Step 2: Convert to fraction form
    30,787.22/42,486.30 = 16,640.03/x
  3. Step 3: Cross multiply
    30,787.22x = 42,486.30 × 16,640.03
  4. Step 4: Simplify right side
    30,787.22x = 706,973,094.16
  5. Step 5: Solve for x
    x = 706,973,094.16/30,787.22
  6. Step 6: Final answer
    x = 22,963.20

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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.