Home / 20,779.84-31,167.03-5,990.25

Finding the Fourth Proportional to 20,779.84, 31,167.03 and 5,990.25

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Solution

The fourth proportional to 20,779.84, 31,167.03 and 5,990.25 is: 8,984.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.84 : 31,167.03 = 5,990.25 : x
  2. Step 2: Convert to fraction form
    20,779.84/31,167.03 = 5,990.25/x
  3. Step 3: Cross multiply
    20,779.84x = 31,167.03 × 5,990.25
  4. Step 4: Simplify right side
    20,779.84x = 186,698,407.10
  5. Step 5: Solve for x
    x = 186,698,407.10/20,779.84
  6. Step 6: Final answer
    x = 8,984.59

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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.