Home / 20,875.22-31,234.36-14,647.38

Finding the Fourth Proportional to 20,875.22, 31,234.36 and 14,647.38

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Solution

The fourth proportional to 20,875.22, 31,234.36 and 14,647.38 is: 21,916.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.22 : 31,234.36 = 14,647.38 : x
  2. Step 2: Convert to fraction form
    20,875.22/31,234.36 = 14,647.38/x
  3. Step 3: Cross multiply
    20,875.22x = 31,234.36 × 14,647.38
  4. Step 4: Simplify right side
    20,875.22x = 457,501,589.39
  5. Step 5: Solve for x
    x = 457,501,589.39/20,875.22
  6. Step 6: Final answer
    x = 21,916.01

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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.