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Finding the Fourth Proportional to 19,221.50, 26,525.67 and 10,389.50

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Solution

The fourth proportional to 19,221.50, 26,525.67 and 10,389.50 is: 14,337.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,221.50 : 26,525.67 = 10,389.50 : x
  2. Step 2: Convert to fraction form
    19,221.50/26,525.67 = 10,389.50/x
  3. Step 3: Cross multiply
    19,221.50x = 26,525.67 × 10,389.50
  4. Step 4: Simplify right side
    19,221.50x = 275,588,448.47
  5. Step 5: Solve for x
    x = 275,588,448.47/19,221.50
  6. Step 6: Final answer
    x = 14,337.51

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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.