Home / 28,244.72-38,977.24-15,669.20

Finding the Fourth Proportional to 28,244.72, 38,977.24 and 15,669.20

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Solution

The fourth proportional to 28,244.72, 38,977.24 and 15,669.20 is: 21,623.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,244.72 : 38,977.24 = 15,669.20 : x
  2. Step 2: Convert to fraction form
    28,244.72/38,977.24 = 15,669.20/x
  3. Step 3: Cross multiply
    28,244.72x = 38,977.24 × 15,669.20
  4. Step 4: Simplify right side
    28,244.72x = 610,742,169.01
  5. Step 5: Solve for x
    x = 610,742,169.01/28,244.72
  6. Step 6: Final answer
    x = 21,623.23

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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.