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Finding the Fourth Proportional to 19,038.04, 28,557.02 and 5,187

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Solution

The fourth proportional to 19,038.04, 28,557.02 and 5,187 is: 7,780.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,038.04 : 28,557.02 = 5,187 : x
  2. Step 2: Convert to fraction form
    19,038.04/28,557.02 = 5,187/x
  3. Step 3: Cross multiply
    19,038.04x = 28,557.02 × 5,187
  4. Step 4: Simplify right side
    19,038.04x = 148,125,262.74
  5. Step 5: Solve for x
    x = 148,125,262.74/19,038.04
  6. Step 6: Final answer
    x = 7,780.49

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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.