Home / 30,371.71-41,920.44-20,697.17

Finding the Fourth Proportional to 30,371.71, 41,920.44 and 20,697.17

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Solution

The fourth proportional to 30,371.71, 41,920.44 and 20,697.17 is: 28,567.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,371.71 : 41,920.44 = 20,697.17 : x
  2. Step 2: Convert to fraction form
    30,371.71/41,920.44 = 20,697.17/x
  3. Step 3: Cross multiply
    30,371.71x = 41,920.44 × 20,697.17
  4. Step 4: Simplify right side
    30,371.71x = 867,634,421.74
  5. Step 5: Solve for x
    x = 867,634,421.74/30,371.71
  6. Step 6: Final answer
    x = 28,567.19

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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.