Home / 20,346-28,112.58-16,803.12

Finding the Fourth Proportional to 20,346, 28,112.58 and 16,803.12

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Solution

The fourth proportional to 20,346, 28,112.58 and 16,803.12 is: 23,217.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346 : 28,112.58 = 16,803.12 : x
  2. Step 2: Convert to fraction form
    20,346/28,112.58 = 16,803.12/x
  3. Step 3: Cross multiply
    20,346x = 28,112.58 × 16,803.12
  4. Step 4: Simplify right side
    20,346x = 472,379,055.25
  5. Step 5: Solve for x
    x = 472,379,055.25/20,346
  6. Step 6: Final answer
    x = 23,217.29

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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.