Home / 21,242.32-29,319.24-13,777.36

Finding the Fourth Proportional to 21,242.32, 29,319.24 and 13,777.36

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Solution

The fourth proportional to 21,242.32, 29,319.24 and 13,777.36 is: 19,015.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.32 : 29,319.24 = 13,777.36 : x
  2. Step 2: Convert to fraction form
    21,242.32/29,319.24 = 13,777.36/x
  3. Step 3: Cross multiply
    21,242.32x = 29,319.24 × 13,777.36
  4. Step 4: Simplify right side
    21,242.32x = 403,941,724.41
  5. Step 5: Solve for x
    x = 403,941,724.41/21,242.32
  6. Step 6: Final answer
    x = 19,015.89

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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.