Home / 21,328.69-29,439.43-12,374.41

Finding the Fourth Proportional to 21,328.69, 29,439.43 and 12,374.41

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Solution

The fourth proportional to 21,328.69, 29,439.43 and 12,374.41 is: 17,080.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.69 : 29,439.43 = 12,374.41 : x
  2. Step 2: Convert to fraction form
    21,328.69/29,439.43 = 12,374.41/x
  3. Step 3: Cross multiply
    21,328.69x = 29,439.43 × 12,374.41
  4. Step 4: Simplify right side
    21,328.69x = 364,295,576.99
  5. Step 5: Solve for x
    x = 364,295,576.99/21,328.69
  6. Step 6: Final answer
    x = 17,080.07

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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.