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Finding the Fourth Proportional to 30,348.84, 45,503.58 and 20,962.60

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Solution

The fourth proportional to 30,348.84, 45,503.58 and 20,962.60 is: 31,430.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,348.84 : 45,503.58 = 20,962.60 : x
  2. Step 2: Convert to fraction form
    30,348.84/45,503.58 = 20,962.60/x
  3. Step 3: Cross multiply
    30,348.84x = 45,503.58 × 20,962.60
  4. Step 4: Simplify right side
    30,348.84x = 953,873,346.11
  5. Step 5: Solve for x
    x = 953,873,346.11/30,348.84
  6. Step 6: Final answer
    x = 31,430.31

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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.