Home / 19,330.20-28,986.14-7,489.51

Finding the Fourth Proportional to 19,330.20, 28,986.14 and 7,489.51

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Solution

The fourth proportional to 19,330.20, 28,986.14 and 7,489.51 is: 11,230.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,330.20 : 28,986.14 = 7,489.51 : x
  2. Step 2: Convert to fraction form
    19,330.20/28,986.14 = 7,489.51/x
  3. Step 3: Cross multiply
    19,330.20x = 28,986.14 × 7,489.51
  4. Step 4: Simplify right side
    19,330.20x = 217,091,985.39
  5. Step 5: Solve for x
    x = 217,091,985.39/19,330.20
  6. Step 6: Final answer
    x = 11,230.72

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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.