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Finding the Fourth Proportional to 14,838.19, 20,476.71 and 8,123.87

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Solution

The fourth proportional to 14,838.19, 20,476.71 and 8,123.87 is: 11,210.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,838.19 : 20,476.71 = 8,123.87 : x
  2. Step 2: Convert to fraction form
    14,838.19/20,476.71 = 8,123.87/x
  3. Step 3: Cross multiply
    14,838.19x = 20,476.71 × 8,123.87
  4. Step 4: Simplify right side
    14,838.19x = 166,350,047.99
  5. Step 5: Solve for x
    x = 166,350,047.99/14,838.19
  6. Step 6: Final answer
    x = 11,210.94

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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.