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Finding the Fourth Proportional to 19,302.59, 28,953.90 and 7,615.50

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Solution

The fourth proportional to 19,302.59, 28,953.90 and 7,615.50 is: 11,423.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,302.59 : 28,953.90 = 7,615.50 : x
  2. Step 2: Convert to fraction form
    19,302.59/28,953.90 = 7,615.50/x
  3. Step 3: Cross multiply
    19,302.59x = 28,953.90 × 7,615.50
  4. Step 4: Simplify right side
    19,302.59x = 220,498,425.45
  5. Step 5: Solve for x
    x = 220,498,425.45/19,302.59
  6. Step 6: Final answer
    x = 11,423.26

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1.5x scale

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.