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Finding the Fourth Proportional to 30,240, 45,348.21 and 17,763.21

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Solution

The fourth proportional to 30,240, 45,348.21 and 17,763.21 is: 26,637.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,240 : 45,348.21 = 17,763.21 : x
  2. Step 2: Convert to fraction form
    30,240/45,348.21 = 17,763.21/x
  3. Step 3: Cross multiply
    30,240x = 45,348.21 × 17,763.21
  4. Step 4: Simplify right side
    30,240x = 805,529,777.35
  5. Step 5: Solve for x
    x = 805,529,777.35/30,240
  6. Step 6: Final answer
    x = 26,637.89

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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.