Home / 21,931.26-30,265.12-11,859.68

Finding the Fourth Proportional to 21,931.26, 30,265.12 and 11,859.68

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Solution

The fourth proportional to 21,931.26, 30,265.12 and 11,859.68 is: 16,366.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.26 : 30,265.12 = 11,859.68 : x
  2. Step 2: Convert to fraction form
    21,931.26/30,265.12 = 11,859.68/x
  3. Step 3: Cross multiply
    21,931.26x = 30,265.12 × 11,859.68
  4. Step 4: Simplify right side
    21,931.26x = 358,934,638.36
  5. Step 5: Solve for x
    x = 358,934,638.36/21,931.26
  6. Step 6: Final answer
    x = 16,366.35

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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.