Home / 19,368.18-26,728.11-12,665.16

Finding the Fourth Proportional to 19,368.18, 26,728.11 and 12,665.16

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Solution

The fourth proportional to 19,368.18, 26,728.11 and 12,665.16 is: 17,477.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,368.18 : 26,728.11 = 12,665.16 : x
  2. Step 2: Convert to fraction form
    19,368.18/26,728.11 = 12,665.16/x
  3. Step 3: Cross multiply
    19,368.18x = 26,728.11 × 12,665.16
  4. Step 4: Simplify right side
    19,368.18x = 338,515,789.65
  5. Step 5: Solve for x
    x = 338,515,789.65/19,368.18
  6. Step 6: Final answer
    x = 17,477.93

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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.