Home / 19,309.48-28,889.88-17,909.80

Finding the Fourth Proportional to 19,309.48, 28,889.88 and 17,909.80

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Solution

The fourth proportional to 19,309.48, 28,889.88 and 17,909.80 is: 26,795.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,309.48 : 28,889.88 = 17,909.80 : x
  2. Step 2: Convert to fraction form
    19,309.48/28,889.88 = 17,909.80/x
  3. Step 3: Cross multiply
    19,309.48x = 28,889.88 × 17,909.80
  4. Step 4: Simplify right side
    19,309.48x = 517,411,972.82
  5. Step 5: Solve for x
    x = 517,411,972.82/19,309.48
  6. Step 6: Final answer
    x = 26,795.75

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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.