Home / 21,540.18-29,726.96-12,588.67

Finding the Fourth Proportional to 21,540.18, 29,726.96 and 12,588.67

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Solution

The fourth proportional to 21,540.18, 29,726.96 and 12,588.67 is: 17,373.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540.18 : 29,726.96 = 12,588.67 : x
  2. Step 2: Convert to fraction form
    21,540.18/29,726.96 = 12,588.67/x
  3. Step 3: Cross multiply
    21,540.18x = 29,726.96 × 12,588.67
  4. Step 4: Simplify right side
    21,540.18x = 374,222,752.28
  5. Step 5: Solve for x
    x = 374,222,752.28/21,540.18
  6. Step 6: Final answer
    x = 17,373.24

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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.