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Finding the Fourth Proportional to 19,303.59, 26,639.41 and 10,805.50

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Solution

The fourth proportional to 19,303.59, 26,639.41 and 10,805.50 is: 14,911.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,303.59 : 26,639.41 = 10,805.50 : x
  2. Step 2: Convert to fraction form
    19,303.59/26,639.41 = 10,805.50/x
  3. Step 3: Cross multiply
    19,303.59x = 26,639.41 × 10,805.50
  4. Step 4: Simplify right side
    19,303.59x = 287,852,140.91
  5. Step 5: Solve for x
    x = 287,852,140.91/19,303.59
  6. Step 6: Final answer
    x = 14,911.84

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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.