Home / 30,279.20-45,364.80-14,662.40

Finding the Fourth Proportional to 30,279.20, 45,364.80 and 14,662.40

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Solution

The fourth proportional to 30,279.20, 45,364.80 and 14,662.40 is: 21,967.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,279.20 : 45,364.80 = 14,662.40 : x
  2. Step 2: Convert to fraction form
    30,279.20/45,364.80 = 14,662.40/x
  3. Step 3: Cross multiply
    30,279.20x = 45,364.80 × 14,662.40
  4. Step 4: Simplify right side
    30,279.20x = 665,156,843.52
  5. Step 5: Solve for x
    x = 665,156,843.52/30,279.20
  6. Step 6: Final answer
    x = 21,967.45

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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.