Home / 20,898.93-31,347.57-5,316.96

Finding the Fourth Proportional to 20,898.93, 31,347.57 and 5,316.96

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Solution

The fourth proportional to 20,898.93, 31,347.57 and 5,316.96 is: 7,975.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.93 : 31,347.57 = 5,316.96 : x
  2. Step 2: Convert to fraction form
    20,898.93/31,347.57 = 5,316.96/x
  3. Step 3: Cross multiply
    20,898.93x = 31,347.57 × 5,316.96
  4. Step 4: Simplify right side
    20,898.93x = 166,673,775.79
  5. Step 5: Solve for x
    x = 166,673,775.79/20,898.93
  6. Step 6: Final answer
    x = 7,975.23

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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.