Home / 10,518.12-15,783.84-4,971.66

Finding the Fourth Proportional to 10,518.12, 15,783.84 and 4,971.66

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Solution

The fourth proportional to 10,518.12, 15,783.84 and 4,971.66 is: 7,460.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,518.12 : 15,783.84 = 4,971.66 : x
  2. Step 2: Convert to fraction form
    10,518.12/15,783.84 = 4,971.66/x
  3. Step 3: Cross multiply
    10,518.12x = 15,783.84 × 4,971.66
  4. Step 4: Simplify right side
    10,518.12x = 78,471,885.97
  5. Step 5: Solve for x
    x = 78,471,885.97/10,518.12
  6. Step 6: Final answer
    x = 7,460.64

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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.