Home / 28,669.64-42,980.06-10,890.36

Finding the Fourth Proportional to 28,669.64, 42,980.06 and 10,890.36

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Solution

The fourth proportional to 28,669.64, 42,980.06 and 10,890.36 is: 16,326.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,669.64 : 42,980.06 = 10,890.36 : x
  2. Step 2: Convert to fraction form
    28,669.64/42,980.06 = 10,890.36/x
  3. Step 3: Cross multiply
    28,669.64x = 42,980.06 × 10,890.36
  4. Step 4: Simplify right side
    28,669.64x = 468,068,326.22
  5. Step 5: Solve for x
    x = 468,068,326.22/28,669.64
  6. Step 6: Final answer
    x = 16,326.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.