Home / 21,319.04-29,422.32-11,888.48

Finding the Fourth Proportional to 21,319.04, 29,422.32 and 11,888.48

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Solution

The fourth proportional to 21,319.04, 29,422.32 and 11,888.48 is: 16,407.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.04 : 29,422.32 = 11,888.48 : x
  2. Step 2: Convert to fraction form
    21,319.04/29,422.32 = 11,888.48/x
  3. Step 3: Cross multiply
    21,319.04x = 29,422.32 × 11,888.48
  4. Step 4: Simplify right side
    21,319.04x = 349,786,662.87
  5. Step 5: Solve for x
    x = 349,786,662.87/21,319.04
  6. Step 6: Final answer
    x = 16,407.24

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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.