Home / 28,929.37-39,946.17-21,384.22

Finding the Fourth Proportional to 28,929.37, 39,946.17 and 21,384.22

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Solution

The fourth proportional to 28,929.37, 39,946.17 and 21,384.22 is: 29,527.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,929.37 : 39,946.17 = 21,384.22 : x
  2. Step 2: Convert to fraction form
    28,929.37/39,946.17 = 21,384.22/x
  3. Step 3: Cross multiply
    28,929.37x = 39,946.17 × 21,384.22
  4. Step 4: Simplify right side
    28,929.37x = 854,217,687.44
  5. Step 5: Solve for x
    x = 854,217,687.44/28,929.37
  6. Step 6: Final answer
    x = 29,527.70

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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.