Home / 21,280.58-29,370.70-16,235.28

Finding the Fourth Proportional to 21,280.58, 29,370.70 and 16,235.28

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Solution

The fourth proportional to 21,280.58, 29,370.70 and 16,235.28 is: 22,407.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,280.58 : 29,370.70 = 16,235.28 : x
  2. Step 2: Convert to fraction form
    21,280.58/29,370.70 = 16,235.28/x
  3. Step 3: Cross multiply
    21,280.58x = 29,370.70 × 16,235.28
  4. Step 4: Simplify right side
    21,280.58x = 476,841,538.30
  5. Step 5: Solve for x
    x = 476,841,538.30/21,280.58
  6. Step 6: Final answer
    x = 22,407.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.