Home / 21,261.52-29,339.65-11,699.77

Finding the Fourth Proportional to 21,261.52, 29,339.65 and 11,699.77

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Solution

The fourth proportional to 21,261.52, 29,339.65 and 11,699.77 is: 16,145.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.52 : 29,339.65 = 11,699.77 : x
  2. Step 2: Convert to fraction form
    21,261.52/29,339.65 = 11,699.77/x
  3. Step 3: Cross multiply
    21,261.52x = 29,339.65 × 11,699.77
  4. Step 4: Simplify right side
    21,261.52x = 343,267,156.88
  5. Step 5: Solve for x
    x = 343,267,156.88/21,261.52
  6. Step 6: Final answer
    x = 16,145.00

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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.