Home / 19,140.49-28,714.18-7,889.57

Finding the Fourth Proportional to 19,140.49, 28,714.18 and 7,889.57

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Solution

The fourth proportional to 19,140.49, 28,714.18 and 7,889.57 is: 11,835.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,140.49 : 28,714.18 = 7,889.57 : x
  2. Step 2: Convert to fraction form
    19,140.49/28,714.18 = 7,889.57/x
  3. Step 3: Cross multiply
    19,140.49x = 28,714.18 × 7,889.57
  4. Step 4: Simplify right side
    19,140.49x = 226,542,369.81
  5. Step 5: Solve for x
    x = 226,542,369.81/19,140.49
  6. Step 6: Final answer
    x = 11,835.77

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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.