Home / 28,905.36-39,889.92-16,330.32

Finding the Fourth Proportional to 28,905.36, 39,889.92 and 16,330.32

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Solution

The fourth proportional to 28,905.36, 39,889.92 and 16,330.32 is: 22,536.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,905.36 : 39,889.92 = 16,330.32 : x
  2. Step 2: Convert to fraction form
    28,905.36/39,889.92 = 16,330.32/x
  3. Step 3: Cross multiply
    28,905.36x = 39,889.92 × 16,330.32
  4. Step 4: Simplify right side
    28,905.36x = 651,415,158.37
  5. Step 5: Solve for x
    x = 651,415,158.37/28,905.36
  6. Step 6: Final answer
    x = 22,536.14

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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.