Home / 30,069.64-45,072.06-12,528.28

Finding the Fourth Proportional to 30,069.64, 45,072.06 and 12,528.28

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Solution

The fourth proportional to 30,069.64, 45,072.06 and 12,528.28 is: 18,778.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,069.64 : 45,072.06 = 12,528.28 : x
  2. Step 2: Convert to fraction form
    30,069.64/45,072.06 = 12,528.28/x
  3. Step 3: Cross multiply
    30,069.64x = 45,072.06 × 12,528.28
  4. Step 4: Simplify right side
    30,069.64x = 564,675,387.86
  5. Step 5: Solve for x
    x = 564,675,387.86/30,069.64
  6. Step 6: Final answer
    x = 18,778.92

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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.