Home / 21,080.55-29,090.02-11,648.51

Finding the Fourth Proportional to 21,080.55, 29,090.02 and 11,648.51

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Solution

The fourth proportional to 21,080.55, 29,090.02 and 11,648.51 is: 16,074.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080.55 : 29,090.02 = 11,648.51 : x
  2. Step 2: Convert to fraction form
    21,080.55/29,090.02 = 11,648.51/x
  3. Step 3: Cross multiply
    21,080.55x = 29,090.02 × 11,648.51
  4. Step 4: Simplify right side
    21,080.55x = 338,855,330.63
  5. Step 5: Solve for x
    x = 338,855,330.63/21,080.55
  6. Step 6: Final answer
    x = 16,074.31

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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.