Home / 20,776.07-31,164.78-5,985.74

Finding the Fourth Proportional to 20,776.07, 31,164.78 and 5,985.74

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Solution

The fourth proportional to 20,776.07, 31,164.78 and 5,985.74 is: 8,978.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.07 : 31,164.78 = 5,985.74 : x
  2. Step 2: Convert to fraction form
    20,776.07/31,164.78 = 5,985.74/x
  3. Step 3: Cross multiply
    20,776.07x = 31,164.78 × 5,985.74
  4. Step 4: Simplify right side
    20,776.07x = 186,544,270.24
  5. Step 5: Solve for x
    x = 186,544,270.24/20,776.07
  6. Step 6: Final answer
    x = 8,978.80

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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.