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Finding the Fourth Proportional to 19,215, 26,528.82 and 14,730.42

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Solution

The fourth proportional to 19,215, 26,528.82 and 14,730.42 is: 20,337.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,215 : 26,528.82 = 14,730.42 : x
  2. Step 2: Convert to fraction form
    19,215/26,528.82 = 14,730.42/x
  3. Step 3: Cross multiply
    19,215x = 26,528.82 × 14,730.42
  4. Step 4: Simplify right side
    19,215x = 390,780,660.70
  5. Step 5: Solve for x
    x = 390,780,660.70/19,215
  6. Step 6: Final answer
    x = 20,337.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.