Home / 20,678.10-28,535.24-11,725.58

Finding the Fourth Proportional to 20,678.10, 28,535.24 and 11,725.58

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Solution

The fourth proportional to 20,678.10, 28,535.24 and 11,725.58 is: 16,180.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.10 : 28,535.24 = 11,725.58 : x
  2. Step 2: Convert to fraction form
    20,678.10/28,535.24 = 11,725.58/x
  3. Step 3: Cross multiply
    20,678.10x = 28,535.24 × 11,725.58
  4. Step 4: Simplify right side
    20,678.10x = 334,592,038.14
  5. Step 5: Solve for x
    x = 334,592,038.14/20,678.10
  6. Step 6: Final answer
    x = 16,180.99

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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.