Home / 21,090.63-29,107.65-12,019.34

Finding the Fourth Proportional to 21,090.63, 29,107.65 and 12,019.34

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Solution

The fourth proportional to 21,090.63, 29,107.65 and 12,019.34 is: 16,588.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,090.63 : 29,107.65 = 12,019.34 : x
  2. Step 2: Convert to fraction form
    21,090.63/29,107.65 = 12,019.34/x
  3. Step 3: Cross multiply
    21,090.63x = 29,107.65 × 12,019.34
  4. Step 4: Simplify right side
    21,090.63x = 349,854,696.06
  5. Step 5: Solve for x
    x = 349,854,696.06/21,090.63
  6. Step 6: Final answer
    x = 16,588.16

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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.