Home / 21,070.98-29,077.86-11,639.54

Finding the Fourth Proportional to 21,070.98, 29,077.86 and 11,639.54

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Solution

The fourth proportional to 21,070.98, 29,077.86 and 11,639.54 is: 16,062.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.98 : 29,077.86 = 11,639.54 : x
  2. Step 2: Convert to fraction form
    21,070.98/29,077.86 = 11,639.54/x
  3. Step 3: Cross multiply
    21,070.98x = 29,077.86 × 11,639.54
  4. Step 4: Simplify right side
    21,070.98x = 338,453,030.93
  5. Step 5: Solve for x
    x = 338,453,030.93/21,070.98
  6. Step 6: Final answer
    x = 16,062.52

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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.