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Finding the Fourth Proportional to 25,673.29, 35,431.77 and 18,509.11

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Solution

The fourth proportional to 25,673.29, 35,431.77 and 18,509.11 is: 25,544.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,673.29 : 35,431.77 = 18,509.11 : x
  2. Step 2: Convert to fraction form
    25,673.29/35,431.77 = 18,509.11/x
  3. Step 3: Cross multiply
    25,673.29x = 35,431.77 × 18,509.11
  4. Step 4: Simplify right side
    25,673.29x = 655,810,528.42
  5. Step 5: Solve for x
    x = 655,810,528.42/25,673.29
  6. Step 6: Final answer
    x = 25,544.47

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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.