Home / 21,087.32-29,100.47-11,655.88

Finding the Fourth Proportional to 21,087.32, 29,100.47 and 11,655.88

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Solution

The fourth proportional to 21,087.32, 29,100.47 and 11,655.88 is: 16,085.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087.32 : 29,100.47 = 11,655.88 : x
  2. Step 2: Convert to fraction form
    21,087.32/29,100.47 = 11,655.88/x
  3. Step 3: Cross multiply
    21,087.32x = 29,100.47 × 11,655.88
  4. Step 4: Simplify right side
    21,087.32x = 339,191,455.23
  5. Step 5: Solve for x
    x = 339,191,455.23/21,087.32
  6. Step 6: Final answer
    x = 16,085.09

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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.