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Finding the Fourth Proportional to 19,271.71, 28,890.03 and 7,417.93

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Solution

The fourth proportional to 19,271.71, 28,890.03 and 7,417.93 is: 11,120.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,271.71 : 28,890.03 = 7,417.93 : x
  2. Step 2: Convert to fraction form
    19,271.71/28,890.03 = 7,417.93/x
  3. Step 3: Cross multiply
    19,271.71x = 28,890.03 × 7,417.93
  4. Step 4: Simplify right side
    19,271.71x = 214,304,220.24
  5. Step 5: Solve for x
    x = 214,304,220.24/19,271.71
  6. Step 6: Final answer
    x = 11,120.15

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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.