Home / 21,216.40-29,254.48-13,549.35

Finding the Fourth Proportional to 21,216.40, 29,254.48 and 13,549.35

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Solution

The fourth proportional to 21,216.40, 29,254.48 and 13,549.35 is: 18,682.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,216.40 : 29,254.48 = 13,549.35 : x
  2. Step 2: Convert to fraction form
    21,216.40/29,254.48 = 13,549.35/x
  3. Step 3: Cross multiply
    21,216.40x = 29,254.48 × 13,549.35
  4. Step 4: Simplify right side
    21,216.40x = 396,379,132.39
  5. Step 5: Solve for x
    x = 396,379,132.39/21,216.40
  6. Step 6: Final answer
    x = 18,682.67

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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.