Home / 20,743.40-31,109.52-7,595.84

Finding the Fourth Proportional to 20,743.40, 31,109.52 and 7,595.84

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Solution

The fourth proportional to 20,743.40, 31,109.52 and 7,595.84 is: 11,391.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.40 : 31,109.52 = 7,595.84 : x
  2. Step 2: Convert to fraction form
    20,743.40/31,109.52 = 7,595.84/x
  3. Step 3: Cross multiply
    20,743.40x = 31,109.52 × 7,595.84
  4. Step 4: Simplify right side
    20,743.40x = 236,302,936.40
  5. Step 5: Solve for x
    x = 236,302,936.40/20,743.40
  6. Step 6: Final answer
    x = 11,391.72

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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.