Home / 14,178.84-19,564.38-7,890

Finding the Fourth Proportional to 14,178.84, 19,564.38 and 7,890

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Solution

The fourth proportional to 14,178.84, 19,564.38 and 7,890 is: 10,886.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,178.84 : 19,564.38 = 7,890 : x
  2. Step 2: Convert to fraction form
    14,178.84/19,564.38 = 7,890/x
  3. Step 3: Cross multiply
    14,178.84x = 19,564.38 × 7,890
  4. Step 4: Simplify right side
    14,178.84x = 154,362,958.20
  5. Step 5: Solve for x
    x = 154,362,958.20/14,178.84
  6. Step 6: Final answer
    x = 10,886.85

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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.