Home / 19,780.83-29,682.93-7,309.67

Finding the Fourth Proportional to 19,780.83, 29,682.93 and 7,309.67

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Solution

The fourth proportional to 19,780.83, 29,682.93 and 7,309.67 is: 10,968.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,780.83 : 29,682.93 = 7,309.67 : x
  2. Step 2: Convert to fraction form
    19,780.83/29,682.93 = 7,309.67/x
  3. Step 3: Cross multiply
    19,780.83x = 29,682.93 × 7,309.67
  4. Step 4: Simplify right side
    19,780.83x = 216,972,274.52
  5. Step 5: Solve for x
    x = 216,972,274.52/19,780.83
  6. Step 6: Final answer
    x = 10,968.82

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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.