Home / 19,130.38-28,689.99-7,440.82

Finding the Fourth Proportional to 19,130.38, 28,689.99 and 7,440.82

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Solution

The fourth proportional to 19,130.38, 28,689.99 and 7,440.82 is: 11,159.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,130.38 : 28,689.99 = 7,440.82 : x
  2. Step 2: Convert to fraction form
    19,130.38/28,689.99 = 7,440.82/x
  3. Step 3: Cross multiply
    19,130.38x = 28,689.99 × 7,440.82
  4. Step 4: Simplify right side
    19,130.38x = 213,477,051.39
  5. Step 5: Solve for x
    x = 213,477,051.39/19,130.38
  6. Step 6: Final answer
    x = 11,159.06

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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.