Home / 21,064.82-29,071.40-12,117.56

Finding the Fourth Proportional to 21,064.82, 29,071.40 and 12,117.56

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Solution

The fourth proportional to 21,064.82, 29,071.40 and 12,117.56 is: 16,723.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,064.82 : 29,071.40 = 12,117.56 : x
  2. Step 2: Convert to fraction form
    21,064.82/29,071.40 = 12,117.56/x
  3. Step 3: Cross multiply
    21,064.82x = 29,071.40 × 12,117.56
  4. Step 4: Simplify right side
    21,064.82x = 352,274,227.84
  5. Step 5: Solve for x
    x = 352,274,227.84/21,064.82
  6. Step 6: Final answer
    x = 16,723.35

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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.