Home / 19,128.42-28,639.41-9,748.20

Finding the Fourth Proportional to 19,128.42, 28,639.41 and 9,748.20

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Solution

The fourth proportional to 19,128.42, 28,639.41 and 9,748.20 is: 14,595.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.42 : 28,639.41 = 9,748.20 : x
  2. Step 2: Convert to fraction form
    19,128.42/28,639.41 = 9,748.20/x
  3. Step 3: Cross multiply
    19,128.42x = 28,639.41 × 9,748.20
  4. Step 4: Simplify right side
    19,128.42x = 279,182,696.56
  5. Step 5: Solve for x
    x = 279,182,696.56/19,128.42
  6. Step 6: Final answer
    x = 14,595.18

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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.