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Finding the Fourth Proportional to 19,260.80, 28,898.08 and 7,582.40

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Solution

The fourth proportional to 19,260.80, 28,898.08 and 7,582.40 is: 11,376.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,260.80 : 28,898.08 = 7,582.40 : x
  2. Step 2: Convert to fraction form
    19,260.80/28,898.08 = 7,582.40/x
  3. Step 3: Cross multiply
    19,260.80x = 28,898.08 × 7,582.40
  4. Step 4: Simplify right side
    19,260.80x = 219,116,801.79
  5. Step 5: Solve for x
    x = 219,116,801.79/19,260.80
  6. Step 6: Final answer
    x = 11,376.31

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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.