Home / 14,178.76-19,567.46-7,891.28

Finding the Fourth Proportional to 14,178.76, 19,567.46 and 7,891.28

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Solution

The fourth proportional to 14,178.76, 19,567.46 and 7,891.28 is: 10,890.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,178.76 : 19,567.46 = 7,891.28 : x
  2. Step 2: Convert to fraction form
    14,178.76/19,567.46 = 7,891.28/x
  3. Step 3: Cross multiply
    14,178.76x = 19,567.46 × 7,891.28
  4. Step 4: Simplify right side
    14,178.76x = 154,412,305.75
  5. Step 5: Solve for x
    x = 154,412,305.75/14,178.76
  6. Step 6: Final answer
    x = 10,890.40

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Double scale
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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.