Home / 30,191.64-45,272.89-12,656.76

Finding the Fourth Proportional to 30,191.64, 45,272.89 and 12,656.76

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Solution

The fourth proportional to 30,191.64, 45,272.89 and 12,656.76 is: 18,979.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,191.64 : 45,272.89 = 12,656.76 : x
  2. Step 2: Convert to fraction form
    30,191.64/45,272.89 = 12,656.76/x
  3. Step 3: Cross multiply
    30,191.64x = 45,272.89 × 12,656.76
  4. Step 4: Simplify right side
    30,191.64x = 573,008,103.24
  5. Step 5: Solve for x
    x = 573,008,103.24/30,191.64
  6. Step 6: Final answer
    x = 18,979.03

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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.