Home / 21,316.15-29,415.37-11,884.63

Finding the Fourth Proportional to 21,316.15, 29,415.37 and 11,884.63

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Solution

The fourth proportional to 21,316.15, 29,415.37 and 11,884.63 is: 16,400.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.15 : 29,415.37 = 11,884.63 : x
  2. Step 2: Convert to fraction form
    21,316.15/29,415.37 = 11,884.63/x
  3. Step 3: Cross multiply
    21,316.15x = 29,415.37 × 11,884.63
  4. Step 4: Simplify right side
    21,316.15x = 349,590,788.76
  5. Step 5: Solve for x
    x = 349,590,788.76/21,316.15
  6. Step 6: Final answer
    x = 16,400.28

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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.