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Finding the Fourth Proportional to 30,415.79, 45,623.80 and 9,355.69

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Solution

The fourth proportional to 30,415.79, 45,623.80 and 9,355.69 is: 14,033.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,415.79 : 45,623.80 = 9,355.69 : x
  2. Step 2: Convert to fraction form
    30,415.79/45,623.80 = 9,355.69/x
  3. Step 3: Cross multiply
    30,415.79x = 45,623.80 × 9,355.69
  4. Step 4: Simplify right side
    30,415.79x = 426,842,205.83
  5. Step 5: Solve for x
    x = 426,842,205.83/30,415.79
  6. Step 6: Final answer
    x = 14,033.57

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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.