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Finding the Fourth Proportional to 19,007.40, 28,511.10 and 6,695.40

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Solution

The fourth proportional to 19,007.40, 28,511.10 and 6,695.40 is: 10,043.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,007.40 : 28,511.10 = 6,695.40 : x
  2. Step 2: Convert to fraction form
    19,007.40/28,511.10 = 6,695.40/x
  3. Step 3: Cross multiply
    19,007.40x = 28,511.10 × 6,695.40
  4. Step 4: Simplify right side
    19,007.40x = 190,893,218.94
  5. Step 5: Solve for x
    x = 190,893,218.94/19,007.40
  6. Step 6: Final answer
    x = 10,043.10

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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.