Home / 14,178.81-19,566.43-7,891.05

Finding the Fourth Proportional to 14,178.81, 19,566.43 and 7,891.05

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Solution

The fourth proportional to 14,178.81, 19,566.43 and 7,891.05 is: 10,889.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,178.81 : 19,566.43 = 7,891.05 : x
  2. Step 2: Convert to fraction form
    14,178.81/19,566.43 = 7,891.05/x
  3. Step 3: Cross multiply
    14,178.81x = 19,566.43 × 7,891.05
  4. Step 4: Simplify right side
    14,178.81x = 154,399,638.00
  5. Step 5: Solve for x
    x = 154,399,638.00/14,178.81
  6. Step 6: Final answer
    x = 10,889.46

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1.5x scale

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.