Home / 21,289.38-29,379.33-12,342.08

Finding the Fourth Proportional to 21,289.38, 29,379.33 and 12,342.08

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Solution

The fourth proportional to 21,289.38, 29,379.33 and 12,342.08 is: 17,032.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.38 : 29,379.33 = 12,342.08 : x
  2. Step 2: Convert to fraction form
    21,289.38/29,379.33 = 12,342.08/x
  3. Step 3: Cross multiply
    21,289.38x = 29,379.33 × 12,342.08
  4. Step 4: Simplify right side
    21,289.38x = 362,602,041.21
  5. Step 5: Solve for x
    x = 362,602,041.21/21,289.38
  6. Step 6: Final answer
    x = 17,032.06

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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.