Home / 30,869.20-42,599.55-16,722.10

Finding the Fourth Proportional to 30,869.20, 42,599.55 and 16,722.10

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Solution

The fourth proportional to 30,869.20, 42,599.55 and 16,722.10 is: 23,076.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,869.20 : 42,599.55 = 16,722.10 : x
  2. Step 2: Convert to fraction form
    30,869.20/42,599.55 = 16,722.10/x
  3. Step 3: Cross multiply
    30,869.20x = 42,599.55 × 16,722.10
  4. Step 4: Simplify right side
    30,869.20x = 712,353,935.06
  5. Step 5: Solve for x
    x = 712,353,935.06/30,869.20
  6. Step 6: Final answer
    x = 23,076.53

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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.