Home / 28,328.15-42,455.81-11,699.87

Finding the Fourth Proportional to 28,328.15, 42,455.81 and 11,699.87

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Solution

The fourth proportional to 28,328.15, 42,455.81 and 11,699.87 is: 17,534.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,328.15 : 42,455.81 = 11,699.87 : x
  2. Step 2: Convert to fraction form
    28,328.15/42,455.81 = 11,699.87/x
  3. Step 3: Cross multiply
    28,328.15x = 42,455.81 × 11,699.87
  4. Step 4: Simplify right side
    28,328.15x = 496,727,274.72
  5. Step 5: Solve for x
    x = 496,727,274.72/28,328.15
  6. Step 6: Final answer
    x = 17,534.76

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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.