Home / 25,138.06-34,671.09-18,421.18

Finding the Fourth Proportional to 25,138.06, 34,671.09 and 18,421.18

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Solution

The fourth proportional to 25,138.06, 34,671.09 and 18,421.18 is: 25,406.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,138.06 : 34,671.09 = 18,421.18 : x
  2. Step 2: Convert to fraction form
    25,138.06/34,671.09 = 18,421.18/x
  3. Step 3: Cross multiply
    25,138.06x = 34,671.09 × 18,421.18
  4. Step 4: Simplify right side
    25,138.06x = 638,682,389.69
  5. Step 5: Solve for x
    x = 638,682,389.69/25,138.06
  6. Step 6: Final answer
    x = 25,406.99

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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.