Home / 21,345.58-29,458.86-11,787.19

Finding the Fourth Proportional to 21,345.58, 29,458.86 and 11,787.19

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Solution

The fourth proportional to 21,345.58, 29,458.86 and 11,787.19 is: 16,267.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,345.58 : 29,458.86 = 11,787.19 : x
  2. Step 2: Convert to fraction form
    21,345.58/29,458.86 = 11,787.19/x
  3. Step 3: Cross multiply
    21,345.58x = 29,458.86 × 11,787.19
  4. Step 4: Simplify right side
    21,345.58x = 347,237,180.00
  5. Step 5: Solve for x
    x = 347,237,180.00/21,345.58
  6. Step 6: Final answer
    x = 16,267.40

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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.