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Finding the Fourth Proportional to 30,168.60, 45,192.51 and 14,388.99

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Solution

The fourth proportional to 30,168.60, 45,192.51 and 14,388.99 is: 21,554.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,168.60 : 45,192.51 = 14,388.99 : x
  2. Step 2: Convert to fraction form
    30,168.60/45,192.51 = 14,388.99/x
  3. Step 3: Cross multiply
    30,168.60x = 45,192.51 × 14,388.99
  4. Step 4: Simplify right side
    30,168.60x = 650,274,574.46
  5. Step 5: Solve for x
    x = 650,274,574.46/30,168.60
  6. Step 6: Final answer
    x = 21,554.68

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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.