Home / 21,246.30-29,303.67-13,693.38

Finding the Fourth Proportional to 21,246.30, 29,303.67 and 13,693.38

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Solution

The fourth proportional to 21,246.30, 29,303.67 and 13,693.38 is: 18,886.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,246.30 : 29,303.67 = 13,693.38 : x
  2. Step 2: Convert to fraction form
    21,246.30/29,303.67 = 13,693.38/x
  3. Step 3: Cross multiply
    21,246.30x = 29,303.67 × 13,693.38
  4. Step 4: Simplify right side
    21,246.30x = 401,266,288.70
  5. Step 5: Solve for x
    x = 401,266,288.70/21,246.30
  6. Step 6: Final answer
    x = 18,886.41

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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.