Home / 19,782.90-27,298.62-11,287.08

Finding the Fourth Proportional to 19,782.90, 27,298.62 and 11,287.08

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Solution

The fourth proportional to 19,782.90, 27,298.62 and 11,287.08 is: 15,575.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,782.90 : 27,298.62 = 11,287.08 : x
  2. Step 2: Convert to fraction form
    19,782.90/27,298.62 = 11,287.08/x
  3. Step 3: Cross multiply
    19,782.90x = 27,298.62 × 11,287.08
  4. Step 4: Simplify right side
    19,782.90x = 308,121,707.83
  5. Step 5: Solve for x
    x = 308,121,707.83/19,782.90
  6. Step 6: Final answer
    x = 15,575.15

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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.