Home / 28,376.48-42,564.64-12,775.84

Finding the Fourth Proportional to 28,376.48, 42,564.64 and 12,775.84

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Solution

The fourth proportional to 28,376.48, 42,564.64 and 12,775.84 is: 19,163.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,376.48 : 42,564.64 = 12,775.84 : x
  2. Step 2: Convert to fraction form
    28,376.48/42,564.64 = 12,775.84/x
  3. Step 3: Cross multiply
    28,376.48x = 42,564.64 × 12,775.84
  4. Step 4: Simplify right side
    28,376.48x = 543,799,030.30
  5. Step 5: Solve for x
    x = 543,799,030.30/28,376.48
  6. Step 6: Final answer
    x = 19,163.72

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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.