Home / 21,636.21-29,840.67-14,920.32

Finding the Fourth Proportional to 21,636.21, 29,840.67 and 14,920.32

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Solution

The fourth proportional to 21,636.21, 29,840.67 and 14,920.32 is: 20,578.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,636.21 : 29,840.67 = 14,920.32 : x
  2. Step 2: Convert to fraction form
    21,636.21/29,840.67 = 14,920.32/x
  3. Step 3: Cross multiply
    21,636.21x = 29,840.67 × 14,920.32
  4. Step 4: Simplify right side
    21,636.21x = 445,232,345.41
  5. Step 5: Solve for x
    x = 445,232,345.41/21,636.21
  6. Step 6: Final answer
    x = 20,578.11

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Double scale
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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.