Home / 39,806.86-54,931.26-21,898.96

Finding the Fourth Proportional to 39,806.86, 54,931.26 and 21,898.96

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Solution

The fourth proportional to 39,806.86, 54,931.26 and 21,898.96 is: 30,219.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,806.86 : 54,931.26 = 21,898.96 : x
  2. Step 2: Convert to fraction form
    39,806.86/54,931.26 = 21,898.96/x
  3. Step 3: Cross multiply
    39,806.86x = 54,931.26 × 21,898.96
  4. Step 4: Simplify right side
    39,806.86x = 1,202,937,465.49
  5. Step 5: Solve for x
    x = 1,202,937,465.49/39,806.86
  6. Step 6: Final answer
    x = 30,219.35

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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.