Home / 21,789.79-32,698.48-9,309.87

Finding the Fourth Proportional to 21,789.79, 32,698.48 and 9,309.87

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Solution

The fourth proportional to 21,789.79, 32,698.48 and 9,309.87 is: 13,970.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789.79 : 32,698.48 = 9,309.87 : x
  2. Step 2: Convert to fraction form
    21,789.79/32,698.48 = 9,309.87/x
  3. Step 3: Cross multiply
    21,789.79x = 32,698.48 × 9,309.87
  4. Step 4: Simplify right side
    21,789.79x = 304,418,598.00
  5. Step 5: Solve for x
    x = 304,418,598.00/21,789.79
  6. Step 6: Final answer
    x = 13,970.70

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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.