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Finding the Fourth Proportional to 19,429, 26,812.02 and 11,047.12

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Solution

The fourth proportional to 19,429, 26,812.02 and 11,047.12 is: 15,245.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,429 : 26,812.02 = 11,047.12 : x
  2. Step 2: Convert to fraction form
    19,429/26,812.02 = 11,047.12/x
  3. Step 3: Cross multiply
    19,429x = 26,812.02 × 11,047.12
  4. Step 4: Simplify right side
    19,429x = 296,195,602.38
  5. Step 5: Solve for x
    x = 296,195,602.38/19,429
  6. Step 6: Final answer
    x = 15,245.03

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Double scale
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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.