Home / 21,027.69-31,546.85-6,987.79

Finding the Fourth Proportional to 21,027.69, 31,546.85 and 6,987.79

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Solution

The fourth proportional to 21,027.69, 31,546.85 and 6,987.79 is: 10,483.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,027.69 : 31,546.85 = 6,987.79 : x
  2. Step 2: Convert to fraction form
    21,027.69/31,546.85 = 6,987.79/x
  3. Step 3: Cross multiply
    21,027.69x = 31,546.85 × 6,987.79
  4. Step 4: Simplify right side
    21,027.69x = 220,442,762.96
  5. Step 5: Solve for x
    x = 220,442,762.96/21,027.69
  6. Step 6: Final answer
    x = 10,483.45

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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.