Home / 15,789.77-21,797.76-9,823.36

Finding the Fourth Proportional to 15,789.77, 21,797.76 and 9,823.36

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Solution

The fourth proportional to 15,789.77, 21,797.76 and 9,823.36 is: 13,561.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,789.77 : 21,797.76 = 9,823.36 : x
  2. Step 2: Convert to fraction form
    15,789.77/21,797.76 = 9,823.36/x
  3. Step 3: Cross multiply
    15,789.77x = 21,797.76 × 9,823.36
  4. Step 4: Simplify right side
    15,789.77x = 214,127,243.67
  5. Step 5: Solve for x
    x = 214,127,243.67/15,789.77
  6. Step 6: Final answer
    x = 13,561.14

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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.