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Finding the Fourth Proportional to 30,454.40, 45,679.98 and 9,676.28

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Solution

The fourth proportional to 30,454.40, 45,679.98 and 9,676.28 is: 14,513.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,454.40 : 45,679.98 = 9,676.28 : x
  2. Step 2: Convert to fraction form
    30,454.40/45,679.98 = 9,676.28/x
  3. Step 3: Cross multiply
    30,454.40x = 45,679.98 × 9,676.28
  4. Step 4: Simplify right side
    30,454.40x = 442,012,276.87
  5. Step 5: Solve for x
    x = 442,012,276.87/30,454.40
  6. Step 6: Final answer
    x = 14,513.91

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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.