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Finding the Fourth Proportional to 19,317.60, 28,963.44 and 7,624.80

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Solution

The fourth proportional to 19,317.60, 28,963.44 and 7,624.80 is: 11,432.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,317.60 : 28,963.44 = 7,624.80 : x
  2. Step 2: Convert to fraction form
    19,317.60/28,963.44 = 7,624.80/x
  3. Step 3: Cross multiply
    19,317.60x = 28,963.44 × 7,624.80
  4. Step 4: Simplify right side
    19,317.60x = 220,840,437.31
  5. Step 5: Solve for x
    x = 220,840,437.31/19,317.60
  6. Step 6: Final answer
    x = 11,432.08

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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.