Home / 28,720.55-43,081.04-10,000.56

Finding the Fourth Proportional to 28,720.55, 43,081.04 and 10,000.56

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Solution

The fourth proportional to 28,720.55, 43,081.04 and 10,000.56 is: 15,000.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720.55 : 43,081.04 = 10,000.56 : x
  2. Step 2: Convert to fraction form
    28,720.55/43,081.04 = 10,000.56/x
  3. Step 3: Cross multiply
    28,720.55x = 43,081.04 × 10,000.56
  4. Step 4: Simplify right side
    28,720.55x = 430,834,259.97
  5. Step 5: Solve for x
    x = 430,834,259.97/28,720.55
  6. Step 6: Final answer
    x = 15,000.91

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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.