Home / 30,313.26-41,838.75-20,371.50

Finding the Fourth Proportional to 30,313.26, 41,838.75 and 20,371.50

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Solution

The fourth proportional to 30,313.26, 41,838.75 and 20,371.50 is: 28,117.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,313.26 : 41,838.75 = 20,371.50 : x
  2. Step 2: Convert to fraction form
    30,313.26/41,838.75 = 20,371.50/x
  3. Step 3: Cross multiply
    30,313.26x = 41,838.75 × 20,371.50
  4. Step 4: Simplify right side
    30,313.26x = 852,318,095.63
  5. Step 5: Solve for x
    x = 852,318,095.63/30,313.26
  6. Step 6: Final answer
    x = 28,117.01

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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.