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Finding the Fourth Proportional to 19,230.50, 26,538.09 and 10,398.50

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Solution

The fourth proportional to 19,230.50, 26,538.09 and 10,398.50 is: 14,349.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,230.50 : 26,538.09 = 10,398.50 : x
  2. Step 2: Convert to fraction form
    19,230.50/26,538.09 = 10,398.50/x
  3. Step 3: Cross multiply
    19,230.50x = 26,538.09 × 10,398.50
  4. Step 4: Simplify right side
    19,230.50x = 275,956,328.87
  5. Step 5: Solve for x
    x = 275,956,328.87/19,230.50
  6. Step 6: Final answer
    x = 14,349.93

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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.