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Finding the Fourth Proportional to 30,616.60, 45,881.70 and 14,999.80

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Solution

The fourth proportional to 30,616.60, 45,881.70 and 14,999.80 is: 22,478.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,616.60 : 45,881.70 = 14,999.80 : x
  2. Step 2: Convert to fraction form
    30,616.60/45,881.70 = 14,999.80/x
  3. Step 3: Cross multiply
    30,616.60x = 45,881.70 × 14,999.80
  4. Step 4: Simplify right side
    30,616.60x = 688,216,323.66
  5. Step 5: Solve for x
    x = 688,216,323.66/30,616.60
  6. Step 6: Final answer
    x = 22,478.54

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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.