Home / 28,655.26-42,971.95-11,120.98

Finding the Fourth Proportional to 28,655.26, 42,971.95 and 11,120.98

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Solution

The fourth proportional to 28,655.26, 42,971.95 and 11,120.98 is: 16,677.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,655.26 : 42,971.95 = 11,120.98 : x
  2. Step 2: Convert to fraction form
    28,655.26/42,971.95 = 11,120.98/x
  3. Step 3: Cross multiply
    28,655.26x = 42,971.95 × 11,120.98
  4. Step 4: Simplify right side
    28,655.26x = 477,890,196.51
  5. Step 5: Solve for x
    x = 477,890,196.51/28,655.26
  6. Step 6: Final answer
    x = 16,677.22

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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.