Home / 30,672.27-42,328.41-18,742.17

Finding the Fourth Proportional to 30,672.27, 42,328.41 and 18,742.17

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Solution

The fourth proportional to 30,672.27, 42,328.41 and 18,742.17 is: 25,864.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,672.27 : 42,328.41 = 18,742.17 : x
  2. Step 2: Convert to fraction form
    30,672.27/42,328.41 = 18,742.17/x
  3. Step 3: Cross multiply
    30,672.27x = 42,328.41 × 18,742.17
  4. Step 4: Simplify right side
    30,672.27x = 793,326,256.05
  5. Step 5: Solve for x
    x = 793,326,256.05/30,672.27
  6. Step 6: Final answer
    x = 25,864.61

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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.