Home / 21,059.61-29,051.77-12,555.74

Finding the Fourth Proportional to 21,059.61, 29,051.77 and 12,555.74

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Solution

The fourth proportional to 21,059.61, 29,051.77 and 12,555.74 is: 17,320.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,059.61 : 29,051.77 = 12,555.74 : x
  2. Step 2: Convert to fraction form
    21,059.61/29,051.77 = 12,555.74/x
  3. Step 3: Cross multiply
    21,059.61x = 29,051.77 × 12,555.74
  4. Step 4: Simplify right side
    21,059.61x = 364,766,262.62
  5. Step 5: Solve for x
    x = 364,766,262.62/21,059.61
  6. Step 6: Final answer
    x = 17,320.66

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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.