Home / 18,648.81-25,727.27-10,689.21

Finding the Fourth Proportional to 18,648.81, 25,727.27 and 10,689.21

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Solution

The fourth proportional to 18,648.81, 25,727.27 and 10,689.21 is: 14,746.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,648.81 : 25,727.27 = 10,689.21 : x
  2. Step 2: Convert to fraction form
    18,648.81/25,727.27 = 10,689.21/x
  3. Step 3: Cross multiply
    18,648.81x = 25,727.27 × 10,689.21
  4. Step 4: Simplify right side
    18,648.81x = 275,004,138.31
  5. Step 5: Solve for x
    x = 275,004,138.31/18,648.81
  6. Step 6: Final answer
    x = 14,746.47

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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.