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Finding the Fourth Proportional to 37,191.78, 51,325.02 and 20,424.78

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Solution

The fourth proportional to 37,191.78, 51,325.02 and 20,424.78 is: 28,186.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,191.78 : 51,325.02 = 20,424.78 : x
  2. Step 2: Convert to fraction form
    37,191.78/51,325.02 = 20,424.78/x
  3. Step 3: Cross multiply
    37,191.78x = 51,325.02 × 20,424.78
  4. Step 4: Simplify right side
    37,191.78x = 1,048,302,242.00
  5. Step 5: Solve for x
    x = 1,048,302,242.00/37,191.78
  6. Step 6: Final answer
    x = 28,186.40

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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.