Home / 30,619.07-42,254.15-17,190.32

Finding the Fourth Proportional to 30,619.07, 42,254.15 and 17,190.32

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Solution

The fourth proportional to 30,619.07, 42,254.15 and 17,190.32 is: 23,722.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,619.07 : 42,254.15 = 17,190.32 : x
  2. Step 2: Convert to fraction form
    30,619.07/42,254.15 = 17,190.32/x
  3. Step 3: Cross multiply
    30,619.07x = 42,254.15 × 17,190.32
  4. Step 4: Simplify right side
    30,619.07x = 726,362,062.61
  5. Step 5: Solve for x
    x = 726,362,062.61/30,619.07
  6. Step 6: Final answer
    x = 23,722.54

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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.