Home / 20,336.88-28,061.66-11,384.76

Finding the Fourth Proportional to 20,336.88, 28,061.66 and 11,384.76

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Solution

The fourth proportional to 20,336.88, 28,061.66 and 11,384.76 is: 15,709.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.88 : 28,061.66 = 11,384.76 : x
  2. Step 2: Convert to fraction form
    20,336.88/28,061.66 = 11,384.76/x
  3. Step 3: Cross multiply
    20,336.88x = 28,061.66 × 11,384.76
  4. Step 4: Simplify right side
    20,336.88x = 319,475,292.76
  5. Step 5: Solve for x
    x = 319,475,292.76/20,336.88
  6. Step 6: Final answer
    x = 15,709.16

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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.