Home / 28,711.48-43,011.06-18,820.57

Finding the Fourth Proportional to 28,711.48, 43,011.06 and 18,820.57

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Solution

The fourth proportional to 28,711.48, 43,011.06 and 18,820.57 is: 28,194.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,711.48 : 43,011.06 = 18,820.57 : x
  2. Step 2: Convert to fraction form
    28,711.48/43,011.06 = 18,820.57/x
  3. Step 3: Cross multiply
    28,711.48x = 43,011.06 × 18,820.57
  4. Step 4: Simplify right side
    28,711.48x = 809,492,665.50
  5. Step 5: Solve for x
    x = 809,492,665.50/28,711.48
  6. Step 6: Final answer
    x = 28,194.04

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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.