Home / 28,228.14-42,347.70-8,505.72

Finding the Fourth Proportional to 28,228.14, 42,347.70 and 8,505.72

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Solution

The fourth proportional to 28,228.14, 42,347.70 and 8,505.72 is: 12,760.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.14 : 42,347.70 = 8,505.72 : x
  2. Step 2: Convert to fraction form
    28,228.14/42,347.70 = 8,505.72/x
  3. Step 3: Cross multiply
    28,228.14x = 42,347.70 × 8,505.72
  4. Step 4: Simplify right side
    28,228.14x = 360,197,678.84
  5. Step 5: Solve for x
    x = 360,197,678.84/28,228.14
  6. Step 6: Final answer
    x = 12,760.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.