Home / 30,872.85-42,602.15-17,445.58

Finding the Fourth Proportional to 30,872.85, 42,602.15 and 17,445.58

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Solution

The fourth proportional to 30,872.85, 42,602.15 and 17,445.58 is: 24,073.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,872.85 : 42,602.15 = 17,445.58 : x
  2. Step 2: Convert to fraction form
    30,872.85/42,602.15 = 17,445.58/x
  3. Step 3: Cross multiply
    30,872.85x = 42,602.15 × 17,445.58
  4. Step 4: Simplify right side
    30,872.85x = 743,219,153.11
  5. Step 5: Solve for x
    x = 743,219,153.11/30,872.85
  6. Step 6: Final answer
    x = 24,073.55

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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.