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Finding the Fourth Proportional to 34,068.76, 47,007.70 and 19,918.87

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Solution

The fourth proportional to 34,068.76, 47,007.70 and 19,918.87 is: 27,483.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,068.76 : 47,007.70 = 19,918.87 : x
  2. Step 2: Convert to fraction form
    34,068.76/47,007.70 = 19,918.87/x
  3. Step 3: Cross multiply
    34,068.76x = 47,007.70 × 19,918.87
  4. Step 4: Simplify right side
    34,068.76x = 936,340,265.30
  5. Step 5: Solve for x
    x = 936,340,265.30/34,068.76
  6. Step 6: Final answer
    x = 27,483.84

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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.