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Finding the Fourth Proportional to 14,881.70, 20,534.57 and 8,912.10

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Solution

The fourth proportional to 14,881.70, 20,534.57 and 8,912.10 is: 12,297.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,881.70 : 20,534.57 = 8,912.10 : x
  2. Step 2: Convert to fraction form
    14,881.70/20,534.57 = 8,912.10/x
  3. Step 3: Cross multiply
    14,881.70x = 20,534.57 × 8,912.10
  4. Step 4: Simplify right side
    14,881.70x = 183,006,096.74
  5. Step 5: Solve for x
    x = 183,006,096.74/14,881.70
  6. Step 6: Final answer
    x = 12,297.40

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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.