Home / 21,004.28-28,973.08-12,500.69

Finding the Fourth Proportional to 21,004.28, 28,973.08 and 12,500.69

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Solution

The fourth proportional to 21,004.28, 28,973.08 and 12,500.69 is: 17,243.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.28 : 28,973.08 = 12,500.69 : x
  2. Step 2: Convert to fraction form
    21,004.28/28,973.08 = 12,500.69/x
  3. Step 3: Cross multiply
    21,004.28x = 28,973.08 × 12,500.69
  4. Step 4: Simplify right side
    21,004.28x = 362,183,491.43
  5. Step 5: Solve for x
    x = 362,183,491.43/21,004.28
  6. Step 6: Final answer
    x = 17,243.32

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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.