Home / 21,333.96-29,444.64-20,677.32

Finding the Fourth Proportional to 21,333.96, 29,444.64 and 20,677.32

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Solution

The fourth proportional to 21,333.96, 29,444.64 and 20,677.32 is: 28,538.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,333.96 : 29,444.64 = 20,677.32 : x
  2. Step 2: Convert to fraction form
    21,333.96/29,444.64 = 20,677.32/x
  3. Step 3: Cross multiply
    21,333.96x = 29,444.64 × 20,677.32
  4. Step 4: Simplify right side
    21,333.96x = 608,836,243.56
  5. Step 5: Solve for x
    x = 608,836,243.56/21,333.96
  6. Step 6: Final answer
    x = 28,538.36

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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.