Home / 28,161.30-42,243.84-9,443.28

Finding the Fourth Proportional to 28,161.30, 42,243.84 and 9,443.28

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Solution

The fourth proportional to 28,161.30, 42,243.84 and 9,443.28 is: 14,165.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161.30 : 42,243.84 = 9,443.28 : x
  2. Step 2: Convert to fraction form
    28,161.30/42,243.84 = 9,443.28/x
  3. Step 3: Cross multiply
    28,161.30x = 42,243.84 × 9,443.28
  4. Step 4: Simplify right side
    28,161.30x = 398,920,409.40
  5. Step 5: Solve for x
    x = 398,920,409.40/28,161.30
  6. Step 6: Final answer
    x = 14,165.55

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1.5x scale

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.