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Finding the Fourth Proportional to 30,609, 42,240.42 and 18,041.40

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Solution

The fourth proportional to 30,609, 42,240.42 and 18,041.40 is: 24,897.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,609 : 42,240.42 = 18,041.40 : x
  2. Step 2: Convert to fraction form
    30,609/42,240.42 = 18,041.40/x
  3. Step 3: Cross multiply
    30,609x = 42,240.42 × 18,041.40
  4. Step 4: Simplify right side
    30,609x = 762,076,313.39
  5. Step 5: Solve for x
    x = 762,076,313.39/30,609
  6. Step 6: Final answer
    x = 24,897.13

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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.