Home / 21,228.22-29,307.74-14,064.20

Finding the Fourth Proportional to 21,228.22, 29,307.74 and 14,064.20

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Solution

The fourth proportional to 21,228.22, 29,307.74 and 14,064.20 is: 19,417.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,228.22 : 29,307.74 = 14,064.20 : x
  2. Step 2: Convert to fraction form
    21,228.22/29,307.74 = 14,064.20/x
  3. Step 3: Cross multiply
    21,228.22x = 29,307.74 × 14,064.20
  4. Step 4: Simplify right side
    21,228.22x = 412,189,843.64
  5. Step 5: Solve for x
    x = 412,189,843.64/21,228.22
  6. Step 6: Final answer
    x = 19,417.07

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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.