Home / 28,905.12-43,339.68-13,302.72

Finding the Fourth Proportional to 28,905.12, 43,339.68 and 13,302.72

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Solution

The fourth proportional to 28,905.12, 43,339.68 and 13,302.72 is: 19,945.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,905.12 : 43,339.68 = 13,302.72 : x
  2. Step 2: Convert to fraction form
    28,905.12/43,339.68 = 13,302.72/x
  3. Step 3: Cross multiply
    28,905.12x = 43,339.68 × 13,302.72
  4. Step 4: Simplify right side
    28,905.12x = 576,535,627.93
  5. Step 5: Solve for x
    x = 576,535,627.93/28,905.12
  6. Step 6: Final answer
    x = 19,945.80

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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.