Home / 21,931.24-30,265.05-11,859.61

Finding the Fourth Proportional to 21,931.24, 30,265.05 and 11,859.61

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Solution

The fourth proportional to 21,931.24, 30,265.05 and 11,859.61 is: 16,366.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.24 : 30,265.05 = 11,859.61 : x
  2. Step 2: Convert to fraction form
    21,931.24/30,265.05 = 11,859.61/x
  3. Step 3: Cross multiply
    21,931.24x = 30,265.05 × 11,859.61
  4. Step 4: Simplify right side
    21,931.24x = 358,931,689.63
  5. Step 5: Solve for x
    x = 358,931,689.63/21,931.24
  6. Step 6: Final answer
    x = 16,366.23

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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.