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Finding the Fourth Proportional to 30,569.53, 42,168.03 and 19,221.04

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Solution

The fourth proportional to 30,569.53, 42,168.03 and 19,221.04 is: 26,513.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,569.53 : 42,168.03 = 19,221.04 : x
  2. Step 2: Convert to fraction form
    30,569.53/42,168.03 = 19,221.04/x
  3. Step 3: Cross multiply
    30,569.53x = 42,168.03 × 19,221.04
  4. Step 4: Simplify right side
    30,569.53x = 810,513,391.35
  5. Step 5: Solve for x
    x = 810,513,391.35/30,569.53
  6. Step 6: Final answer
    x = 26,513.77

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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.