Home / 21,271.41-29,352.78-11,840.58

Finding the Fourth Proportional to 21,271.41, 29,352.78 and 11,840.58

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Solution

The fourth proportional to 21,271.41, 29,352.78 and 11,840.58 is: 16,339.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.41 : 29,352.78 = 11,840.58 : x
  2. Step 2: Convert to fraction form
    21,271.41/29,352.78 = 11,840.58/x
  3. Step 3: Cross multiply
    21,271.41x = 29,352.78 × 11,840.58
  4. Step 4: Simplify right side
    21,271.41x = 347,553,939.81
  5. Step 5: Solve for x
    x = 347,553,939.81/21,271.41
  6. Step 6: Final answer
    x = 16,339.02

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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.