Home / 30,869.79-42,600.33-16,722.69

Finding the Fourth Proportional to 30,869.79, 42,600.33 and 16,722.69

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Solution

The fourth proportional to 30,869.79, 42,600.33 and 16,722.69 is: 23,077.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,869.79 : 42,600.33 = 16,722.69 : x
  2. Step 2: Convert to fraction form
    30,869.79/42,600.33 = 16,722.69/x
  3. Step 3: Cross multiply
    30,869.79x = 42,600.33 × 16,722.69
  4. Step 4: Simplify right side
    30,869.79x = 712,392,112.49
  5. Step 5: Solve for x
    x = 712,392,112.49/30,869.79
  6. Step 6: Final answer
    x = 23,077.32

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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.