Home / 30,969.10-42,737.35-16,821.93

Finding the Fourth Proportional to 30,969.10, 42,737.35 and 16,821.93

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Solution

The fourth proportional to 30,969.10, 42,737.35 and 16,821.93 is: 23,214.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,969.10 : 42,737.35 = 16,821.93 : x
  2. Step 2: Convert to fraction form
    30,969.10/42,737.35 = 16,821.93/x
  3. Step 3: Cross multiply
    30,969.10x = 42,737.35 × 16,821.93
  4. Step 4: Simplify right side
    30,969.10x = 718,924,625.98
  5. Step 5: Solve for x
    x = 718,924,625.98/30,969.10
  6. Step 6: Final answer
    x = 23,214.26

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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.