Home / 20,981.03-31,460.70-6,188.06

Finding the Fourth Proportional to 20,981.03, 31,460.70 and 6,188.06

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Solution

The fourth proportional to 20,981.03, 31,460.70 and 6,188.06 is: 9,278.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981.03 : 31,460.70 = 6,188.06 : x
  2. Step 2: Convert to fraction form
    20,981.03/31,460.70 = 6,188.06/x
  3. Step 3: Cross multiply
    20,981.03x = 31,460.70 × 6,188.06
  4. Step 4: Simplify right side
    20,981.03x = 194,680,699.24
  5. Step 5: Solve for x
    x = 194,680,699.24/20,981.03
  6. Step 6: Final answer
    x = 9,278.89

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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.