Home / 21,250.08-29,308.64-13,697.64

Finding the Fourth Proportional to 21,250.08, 29,308.64 and 13,697.64

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Solution

The fourth proportional to 21,250.08, 29,308.64 and 13,697.64 is: 18,892.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.08 : 29,308.64 = 13,697.64 : x
  2. Step 2: Convert to fraction form
    21,250.08/29,308.64 = 13,697.64/x
  3. Step 3: Cross multiply
    21,250.08x = 29,308.64 × 13,697.64
  4. Step 4: Simplify right side
    21,250.08x = 401,459,131.12
  5. Step 5: Solve for x
    x = 401,459,131.12/21,250.08
  6. Step 6: Final answer
    x = 18,892.12

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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.