Home / 20,749.56-31,124.70-5,167.26

Finding the Fourth Proportional to 20,749.56, 31,124.70 and 5,167.26

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Solution

The fourth proportional to 20,749.56, 31,124.70 and 5,167.26 is: 7,750.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.56 : 31,124.70 = 5,167.26 : x
  2. Step 2: Convert to fraction form
    20,749.56/31,124.70 = 5,167.26/x
  3. Step 3: Cross multiply
    20,749.56x = 31,124.70 × 5,167.26
  4. Step 4: Simplify right side
    20,749.56x = 160,829,417.32
  5. Step 5: Solve for x
    x = 160,829,417.32/20,749.56
  6. Step 6: Final answer
    x = 7,750.98

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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.