Home / 19,782.64-27,291.32-11,820.88

Finding the Fourth Proportional to 19,782.64, 27,291.32 and 11,820.88

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Solution

The fourth proportional to 19,782.64, 27,291.32 and 11,820.88 is: 16,307.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,782.64 : 27,291.32 = 11,820.88 : x
  2. Step 2: Convert to fraction form
    19,782.64/27,291.32 = 11,820.88/x
  3. Step 3: Cross multiply
    19,782.64x = 27,291.32 × 11,820.88
  4. Step 4: Simplify right side
    19,782.64x = 322,607,418.76
  5. Step 5: Solve for x
    x = 322,607,418.76/19,782.64
  6. Step 6: Final answer
    x = 16,307.60

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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.