Home / 20,837.10-28,725.30-14,858.40

Finding the Fourth Proportional to 20,837.10, 28,725.30 and 14,858.40

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Solution

The fourth proportional to 20,837.10, 28,725.30 and 14,858.40 is: 20,483.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.10 : 28,725.30 = 14,858.40 : x
  2. Step 2: Convert to fraction form
    20,837.10/28,725.30 = 14,858.40/x
  3. Step 3: Cross multiply
    20,837.10x = 28,725.30 × 14,858.40
  4. Step 4: Simplify right side
    20,837.10x = 426,811,997.52
  5. Step 5: Solve for x
    x = 426,811,997.52/20,837.10
  6. Step 6: Final answer
    x = 20,483.27

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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.