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Finding the Fourth Proportional to 37,930.39, 56,905.66 and 12,970.39

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Solution

The fourth proportional to 37,930.39, 56,905.66 and 12,970.39 is: 19,459.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,930.39 : 56,905.66 = 12,970.39 : x
  2. Step 2: Convert to fraction form
    37,930.39/56,905.66 = 12,970.39/x
  3. Step 3: Cross multiply
    37,930.39x = 56,905.66 × 12,970.39
  4. Step 4: Simplify right side
    37,930.39x = 738,088,603.41
  5. Step 5: Solve for x
    x = 738,088,603.41/37,930.39
  6. Step 6: Final answer
    x = 19,459.03

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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.