Home / 21,298.52-29,396.96-13,238.26

Finding the Fourth Proportional to 21,298.52, 29,396.96 and 13,238.26

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Solution

The fourth proportional to 21,298.52, 29,396.96 and 13,238.26 is: 18,271.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298.52 : 29,396.96 = 13,238.26 : x
  2. Step 2: Convert to fraction form
    21,298.52/29,396.96 = 13,238.26/x
  3. Step 3: Cross multiply
    21,298.52x = 29,396.96 × 13,238.26
  4. Step 4: Simplify right side
    21,298.52x = 389,164,579.49
  5. Step 5: Solve for x
    x = 389,164,579.49/21,298.52
  6. Step 6: Final answer
    x = 18,271.91

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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.