Home / 21,544.13-29,721.18-12,587.60

Finding the Fourth Proportional to 21,544.13, 29,721.18 and 12,587.60

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Solution

The fourth proportional to 21,544.13, 29,721.18 and 12,587.60 is: 17,365.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,544.13 : 29,721.18 = 12,587.60 : x
  2. Step 2: Convert to fraction form
    21,544.13/29,721.18 = 12,587.60/x
  3. Step 3: Cross multiply
    21,544.13x = 29,721.18 × 12,587.60
  4. Step 4: Simplify right side
    21,544.13x = 374,118,376.07
  5. Step 5: Solve for x
    x = 374,118,376.07/21,544.13
  6. Step 6: Final answer
    x = 17,365.21

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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.