Home / 21,238.59-29,309.29-11,807.16

Finding the Fourth Proportional to 21,238.59, 29,309.29 and 11,807.16

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Solution

The fourth proportional to 21,238.59, 29,309.29 and 11,807.16 is: 16,293.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,238.59 : 29,309.29 = 11,807.16 : x
  2. Step 2: Convert to fraction form
    21,238.59/29,309.29 = 11,807.16/x
  3. Step 3: Cross multiply
    21,238.59x = 29,309.29 × 11,807.16
  4. Step 4: Simplify right side
    21,238.59x = 346,059,403.50
  5. Step 5: Solve for x
    x = 346,059,403.50/21,238.59
  6. Step 6: Final answer
    x = 16,293.89

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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.