Home / 13,889.04-19,166.40-7,920.96

Finding the Fourth Proportional to 13,889.04, 19,166.40 and 7,920.96

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Solution

The fourth proportional to 13,889.04, 19,166.40 and 7,920.96 is: 10,930.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.04 : 19,166.40 = 7,920.96 : x
  2. Step 2: Convert to fraction form
    13,889.04/19,166.40 = 7,920.96/x
  3. Step 3: Cross multiply
    13,889.04x = 19,166.40 × 7,920.96
  4. Step 4: Simplify right side
    13,889.04x = 151,816,287.74
  5. Step 5: Solve for x
    x = 151,816,287.74/13,889.04
  6. Step 6: Final answer
    x = 10,930.65

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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.