Home / 30,192.80-45,274.59-12,657.92

Finding the Fourth Proportional to 30,192.80, 45,274.59 and 12,657.92

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Solution

The fourth proportional to 30,192.80, 45,274.59 and 12,657.92 is: 18,980.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,192.80 : 45,274.59 = 12,657.92 : x
  2. Step 2: Convert to fraction form
    30,192.80/45,274.59 = 12,657.92/x
  3. Step 3: Cross multiply
    30,192.80x = 45,274.59 × 12,657.92
  4. Step 4: Simplify right side
    30,192.80x = 573,082,251.44
  5. Step 5: Solve for x
    x = 573,082,251.44/30,192.80
  6. Step 6: Final answer
    x = 18,980.76

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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.