Home / 21,303.41-29,393.25-13,539.38

Finding the Fourth Proportional to 21,303.41, 29,393.25 and 13,539.38

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Solution

The fourth proportional to 21,303.41, 29,393.25 and 13,539.38 is: 18,680.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.41 : 29,393.25 = 13,539.38 : x
  2. Step 2: Convert to fraction form
    21,303.41/29,393.25 = 13,539.38/x
  3. Step 3: Cross multiply
    21,303.41x = 29,393.25 × 13,539.38
  4. Step 4: Simplify right side
    21,303.41x = 397,966,381.19
  5. Step 5: Solve for x
    x = 397,966,381.19/21,303.41
  6. Step 6: Final answer
    x = 18,680.88

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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.