Home / 30,215.70-41,703.63-19,306.86

Finding the Fourth Proportional to 30,215.70, 41,703.63 and 19,306.86

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Solution

The fourth proportional to 30,215.70, 41,703.63 and 19,306.86 is: 26,647.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,215.70 : 41,703.63 = 19,306.86 : x
  2. Step 2: Convert to fraction form
    30,215.70/41,703.63 = 19,306.86/x
  3. Step 3: Cross multiply
    30,215.70x = 41,703.63 × 19,306.86
  4. Step 4: Simplify right side
    30,215.70x = 805,166,145.90
  5. Step 5: Solve for x
    x = 805,166,145.90/30,215.70
  6. Step 6: Final answer
    x = 26,647.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.