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Finding the Third Proportional to 14,580 and 21,276

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Solution

The third proportional to 14,580 and 21,276 is: 31,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,580 : 21,276 = 21,276 : x
  2. Step 2: Convert to fraction form
    14,580/21,276 = 21,276/x
  3. Step 3: Cross multiply
    14,580x = 21,276 × 21,276
  4. Step 4: Simplify right side
    14,580x = 452,668,176
  5. Step 5: Solve for x
    x = 452,668,176/14,580
  6. Step 6: Final answer
    x = 31,047.20

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.