Home / 28,178-42,260.15-9,453.18

Finding the Fourth Proportional to 28,178, 42,260.15 and 9,453.18

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Solution

The fourth proportional to 28,178, 42,260.15 and 9,453.18 is: 14,177.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,178 : 42,260.15 = 9,453.18 : x
  2. Step 2: Convert to fraction form
    28,178/42,260.15 = 9,453.18/x
  3. Step 3: Cross multiply
    28,178x = 42,260.15 × 9,453.18
  4. Step 4: Simplify right side
    28,178x = 399,492,804.78
  5. Step 5: Solve for x
    x = 399,492,804.78/28,178
  6. Step 6: Final answer
    x = 14,177.47

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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.