Home / 21,004.37-28,986.11-11,572.93

Finding the Fourth Proportional to 21,004.37, 28,986.11 and 11,572.93

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Solution

The fourth proportional to 21,004.37, 28,986.11 and 11,572.93 is: 15,970.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.37 : 28,986.11 = 11,572.93 : x
  2. Step 2: Convert to fraction form
    21,004.37/28,986.11 = 11,572.93/x
  3. Step 3: Cross multiply
    21,004.37x = 28,986.11 × 11,572.93
  4. Step 4: Simplify right side
    21,004.37x = 335,454,178.47
  5. Step 5: Solve for x
    x = 335,454,178.47/21,004.37
  6. Step 6: Final answer
    x = 15,970.69

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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.