Home / 28,910.56-43,368.72-13,332.64

Finding the Fourth Proportional to 28,910.56, 43,368.72 and 13,332.64

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Solution

The fourth proportional to 28,910.56, 43,368.72 and 13,332.64 is: 20,000.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,910.56 : 43,368.72 = 13,332.64 : x
  2. Step 2: Convert to fraction form
    28,910.56/43,368.72 = 13,332.64/x
  3. Step 3: Cross multiply
    28,910.56x = 43,368.72 × 13,332.64
  4. Step 4: Simplify right side
    28,910.56x = 578,219,531.02
  5. Step 5: Solve for x
    x = 578,219,531.02/28,910.56
  6. Step 6: Final answer
    x = 20,000.29

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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.