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Finding the Fourth Proportional to 14,648.76, 21,968.57 and 5,287.57

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Solution

The fourth proportional to 14,648.76, 21,968.57 and 5,287.57 is: 7,929.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,648.76 : 21,968.57 = 5,287.57 : x
  2. Step 2: Convert to fraction form
    14,648.76/21,968.57 = 5,287.57/x
  3. Step 3: Cross multiply
    14,648.76x = 21,968.57 × 5,287.57
  4. Step 4: Simplify right side
    14,648.76x = 116,160,309.97
  5. Step 5: Solve for x
    x = 116,160,309.97/14,648.76
  6. Step 6: Final answer
    x = 7,929.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.