Home / 28,682.04-39,570.15-21,146.29

Finding the Fourth Proportional to 28,682.04, 39,570.15 and 21,146.29

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Solution

The fourth proportional to 28,682.04, 39,570.15 and 21,146.29 is: 29,173.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,682.04 : 39,570.15 = 21,146.29 : x
  2. Step 2: Convert to fraction form
    28,682.04/39,570.15 = 21,146.29/x
  3. Step 3: Cross multiply
    28,682.04x = 39,570.15 × 21,146.29
  4. Step 4: Simplify right side
    28,682.04x = 836,761,768.32
  5. Step 5: Solve for x
    x = 836,761,768.32/28,682.04
  6. Step 6: Final answer
    x = 29,173.72

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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.