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Finding the Fourth Proportional to 30,653.80, 42,303.50 and 17,225.02

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Solution

The fourth proportional to 30,653.80, 42,303.50 and 17,225.02 is: 23,771.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,653.80 : 42,303.50 = 17,225.02 : x
  2. Step 2: Convert to fraction form
    30,653.80/42,303.50 = 17,225.02/x
  3. Step 3: Cross multiply
    30,653.80x = 42,303.50 × 17,225.02
  4. Step 4: Simplify right side
    30,653.80x = 728,678,633.57
  5. Step 5: Solve for x
    x = 728,678,633.57/30,653.80
  6. Step 6: Final answer
    x = 23,771.23

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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.