Home / 30,529.19-42,129.13-17,099.78

Finding the Fourth Proportional to 30,529.19, 42,129.13 and 17,099.78

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Solution

The fourth proportional to 30,529.19, 42,129.13 and 17,099.78 is: 23,597.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,529.19 : 42,129.13 = 17,099.78 : x
  2. Step 2: Convert to fraction form
    30,529.19/42,129.13 = 17,099.78/x
  3. Step 3: Cross multiply
    30,529.19x = 42,129.13 × 17,099.78
  4. Step 4: Simplify right side
    30,529.19x = 720,398,854.59
  5. Step 5: Solve for x
    x = 720,398,854.59/30,529.19
  6. Step 6: Final answer
    x = 23,597.05

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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.