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Finding the Fourth Proportional to 14,648.81, 21,966.66 and 8,728.50

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Solution

The fourth proportional to 14,648.81, 21,966.66 and 8,728.50 is: 13,088.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,648.81 : 21,966.66 = 8,728.50 : x
  2. Step 2: Convert to fraction form
    14,648.81/21,966.66 = 8,728.50/x
  3. Step 3: Cross multiply
    14,648.81x = 21,966.66 × 8,728.50
  4. Step 4: Simplify right side
    14,648.81x = 191,735,882.91
  5. Step 5: Solve for x
    x = 191,735,882.91/14,648.81
  6. Step 6: Final answer
    x = 13,088.83

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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.