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Finding the Fourth Proportional to 30,253.20, 45,379.80 and 14,701.20

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Solution

The fourth proportional to 30,253.20, 45,379.80 and 14,701.20 is: 22,051.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,253.20 : 45,379.80 = 14,701.20 : x
  2. Step 2: Convert to fraction form
    30,253.20/45,379.80 = 14,701.20/x
  3. Step 3: Cross multiply
    30,253.20x = 45,379.80 × 14,701.20
  4. Step 4: Simplify right side
    30,253.20x = 667,137,515.76
  5. Step 5: Solve for x
    x = 667,137,515.76/30,253.20
  6. Step 6: Final answer
    x = 22,051.80

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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.