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Finding the Fourth Proportional to 19,065, 28,565.92 and 13,490.72

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Solution

The fourth proportional to 19,065, 28,565.92 and 13,490.72 is: 20,213.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,065 : 28,565.92 = 13,490.72 : x
  2. Step 2: Convert to fraction form
    19,065/28,565.92 = 13,490.72/x
  3. Step 3: Cross multiply
    19,065x = 28,565.92 × 13,490.72
  4. Step 4: Simplify right side
    19,065x = 385,374,828.26
  5. Step 5: Solve for x
    x = 385,374,828.26/19,065
  6. Step 6: Final answer
    x = 20,213.73

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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.