Home / 30,389.74-41,935-17,639.54

Finding the Fourth Proportional to 30,389.74, 41,935 and 17,639.54

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Solution

The fourth proportional to 30,389.74, 41,935 and 17,639.54 is: 24,340.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,389.74 : 41,935 = 17,639.54 : x
  2. Step 2: Convert to fraction form
    30,389.74/41,935 = 17,639.54/x
  3. Step 3: Cross multiply
    30,389.74x = 41,935 × 17,639.54
  4. Step 4: Simplify right side
    30,389.74x = 739,714,109.90
  5. Step 5: Solve for x
    x = 739,714,109.90/30,389.74
  6. Step 6: Final answer
    x = 24,340.92

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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.