Home / 20,997.70-31,460.10-13,598.35

Finding the Fourth Proportional to 20,997.70, 31,460.10 and 13,598.35

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Solution

The fourth proportional to 20,997.70, 31,460.10 and 13,598.35 is: 20,373.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.70 : 31,460.10 = 13,598.35 : x
  2. Step 2: Convert to fraction form
    20,997.70/31,460.10 = 13,598.35/x
  3. Step 3: Cross multiply
    20,997.70x = 31,460.10 × 13,598.35
  4. Step 4: Simplify right side
    20,997.70x = 427,805,450.84
  5. Step 5: Solve for x
    x = 427,805,450.84/20,997.70
  6. Step 6: Final answer
    x = 20,373.92

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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.