Home / 21,317.48-29,405.08-14,147.76

Finding the Fourth Proportional to 21,317.48, 29,405.08 and 14,147.76

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Solution

The fourth proportional to 21,317.48, 29,405.08 and 14,147.76 is: 19,515.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.48 : 29,405.08 = 14,147.76 : x
  2. Step 2: Convert to fraction form
    21,317.48/29,405.08 = 14,147.76/x
  3. Step 3: Cross multiply
    21,317.48x = 29,405.08 × 14,147.76
  4. Step 4: Simplify right side
    21,317.48x = 416,016,014.62
  5. Step 5: Solve for x
    x = 416,016,014.62/21,317.48
  6. Step 6: Final answer
    x = 19,515.25

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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.