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Finding the Fourth Proportional to 30,477.71, 45,694.69 and 12,937.97

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Solution

The fourth proportional to 30,477.71, 45,694.69 and 12,937.97 is: 19,397.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,477.71 : 45,694.69 = 12,937.97 : x
  2. Step 2: Convert to fraction form
    30,477.71/45,694.69 = 12,937.97/x
  3. Step 3: Cross multiply
    30,477.71x = 45,694.69 × 12,937.97
  4. Step 4: Simplify right side
    30,477.71x = 591,196,528.38
  5. Step 5: Solve for x
    x = 591,196,528.38/30,477.71
  6. Step 6: Final answer
    x = 19,397.67

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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.