Home / 21,400.78-29,535.29-12,326.45

Finding the Fourth Proportional to 21,400.78, 29,535.29 and 12,326.45

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Solution

The fourth proportional to 21,400.78, 29,535.29 and 12,326.45 is: 17,011.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,400.78 : 29,535.29 = 12,326.45 : x
  2. Step 2: Convert to fraction form
    21,400.78/29,535.29 = 12,326.45/x
  3. Step 3: Cross multiply
    21,400.78x = 29,535.29 × 12,326.45
  4. Step 4: Simplify right side
    21,400.78x = 364,065,112.34
  5. Step 5: Solve for x
    x = 364,065,112.34/21,400.78
  6. Step 6: Final answer
    x = 17,011.77

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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.