Home / 28,158.10-38,857.84-15,411.22

Finding the Fourth Proportional to 28,158.10, 38,857.84 and 15,411.22

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Solution

The fourth proportional to 28,158.10, 38,857.84 and 15,411.22 is: 21,267.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,158.10 : 38,857.84 = 15,411.22 : x
  2. Step 2: Convert to fraction form
    28,158.10/38,857.84 = 15,411.22/x
  3. Step 3: Cross multiply
    28,158.10x = 38,857.84 × 15,411.22
  4. Step 4: Simplify right side
    28,158.10x = 598,846,720.96
  5. Step 5: Solve for x
    x = 598,846,720.96/28,158.10
  6. Step 6: Final answer
    x = 21,267.30

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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.