Home / 21,507.53-29,680.77-11,948.28

Finding the Fourth Proportional to 21,507.53, 29,680.77 and 11,948.28

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Solution

The fourth proportional to 21,507.53, 29,680.77 and 11,948.28 is: 16,488.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,507.53 : 29,680.77 = 11,948.28 : x
  2. Step 2: Convert to fraction form
    21,507.53/29,680.77 = 11,948.28/x
  3. Step 3: Cross multiply
    21,507.53x = 29,680.77 × 11,948.28
  4. Step 4: Simplify right side
    21,507.53x = 354,634,090.83
  5. Step 5: Solve for x
    x = 354,634,090.83/21,507.53
  6. Step 6: Final answer
    x = 16,488.84

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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.