Home / 21,018.36-29,000.18-13,847.48

Finding the Fourth Proportional to 21,018.36, 29,000.18 and 13,847.48

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Solution

The fourth proportional to 21,018.36, 29,000.18 and 13,847.48 is: 19,106.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.36 : 29,000.18 = 13,847.48 : x
  2. Step 2: Convert to fraction form
    21,018.36/29,000.18 = 13,847.48/x
  3. Step 3: Cross multiply
    21,018.36x = 29,000.18 × 13,847.48
  4. Step 4: Simplify right side
    21,018.36x = 401,579,412.55
  5. Step 5: Solve for x
    x = 401,579,412.55/21,018.36
  6. Step 6: Final answer
    x = 19,106.12

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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.