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Finding the Fourth Proportional to 30,393.84, 45,605.16 and 21,048.24

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Solution

The fourth proportional to 30,393.84, 45,605.16 and 21,048.24 is: 31,582.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,393.84 : 45,605.16 = 21,048.24 : x
  2. Step 2: Convert to fraction form
    30,393.84/45,605.16 = 21,048.24/x
  3. Step 3: Cross multiply
    30,393.84x = 45,605.16 × 21,048.24
  4. Step 4: Simplify right side
    30,393.84x = 959,908,352.92
  5. Step 5: Solve for x
    x = 959,908,352.92/30,393.84
  6. Step 6: Final answer
    x = 31,582.33

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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.