Home / 28,157.19-38,856.96-15,411.57

Finding the Fourth Proportional to 28,157.19, 38,856.96 and 15,411.57

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Solution

The fourth proportional to 28,157.19, 38,856.96 and 15,411.57 is: 21,267.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,157.19 : 38,856.96 = 15,411.57 : x
  2. Step 2: Convert to fraction form
    28,157.19/38,856.96 = 15,411.57/x
  3. Step 3: Cross multiply
    28,157.19x = 38,856.96 × 15,411.57
  4. Step 4: Simplify right side
    28,157.19x = 598,846,759.03
  5. Step 5: Solve for x
    x = 598,846,759.03/28,157.19
  6. Step 6: Final answer
    x = 21,267.99

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Half scale
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Double scale
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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.