Home / 20,749.16-31,123.10-6,898.28

Finding the Fourth Proportional to 20,749.16, 31,123.10 and 6,898.28

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Solution

The fourth proportional to 20,749.16, 31,123.10 and 6,898.28 is: 10,347.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.16 : 31,123.10 = 6,898.28 : x
  2. Step 2: Convert to fraction form
    20,749.16/31,123.10 = 6,898.28/x
  3. Step 3: Cross multiply
    20,749.16x = 31,123.10 × 6,898.28
  4. Step 4: Simplify right side
    20,749.16x = 214,695,858.27
  5. Step 5: Solve for x
    x = 214,695,858.27/20,749.16
  6. Step 6: Final answer
    x = 10,347.21

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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.