Home / 28,538.84-39,392.70-20,043

Finding the Fourth Proportional to 28,538.84, 39,392.70 and 20,043

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Solution

The fourth proportional to 28,538.84, 39,392.70 and 20,043 is: 27,665.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,538.84 : 39,392.70 = 20,043 : x
  2. Step 2: Convert to fraction form
    28,538.84/39,392.70 = 20,043/x
  3. Step 3: Cross multiply
    28,538.84x = 39,392.70 × 20,043
  4. Step 4: Simplify right side
    28,538.84x = 789,547,886.10
  5. Step 5: Solve for x
    x = 789,547,886.10/28,538.84
  6. Step 6: Final answer
    x = 27,665.73

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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.