Home / 30,968.53-42,737.02-16,821.34

Finding the Fourth Proportional to 30,968.53, 42,737.02 and 16,821.34

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Solution

The fourth proportional to 30,968.53, 42,737.02 and 16,821.34 is: 23,213.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,968.53 : 42,737.02 = 16,821.34 : x
  2. Step 2: Convert to fraction form
    30,968.53/42,737.02 = 16,821.34/x
  3. Step 3: Cross multiply
    30,968.53x = 42,737.02 × 16,821.34
  4. Step 4: Simplify right side
    30,968.53x = 718,893,795.11
  5. Step 5: Solve for x
    x = 718,893,795.11/30,968.53
  6. Step 6: Final answer
    x = 23,213.69

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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.