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Finding the Fourth Proportional to 19,354.69, 26,709.78 and 10,858.70

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Solution

The fourth proportional to 19,354.69, 26,709.78 and 10,858.70 is: 14,985.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,354.69 : 26,709.78 = 10,858.70 : x
  2. Step 2: Convert to fraction form
    19,354.69/26,709.78 = 10,858.70/x
  3. Step 3: Cross multiply
    19,354.69x = 26,709.78 × 10,858.70
  4. Step 4: Simplify right side
    19,354.69x = 290,033,488.09
  5. Step 5: Solve for x
    x = 290,033,488.09/19,354.69
  6. Step 6: Final answer
    x = 14,985.18

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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.