Home / 21,435.64-29,580.98-12,004.36

Finding the Fourth Proportional to 21,435.64, 29,580.98 and 12,004.36

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Solution

The fourth proportional to 21,435.64, 29,580.98 and 12,004.36 is: 16,565.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,435.64 : 29,580.98 = 12,004.36 : x
  2. Step 2: Convert to fraction form
    21,435.64/29,580.98 = 12,004.36/x
  3. Step 3: Cross multiply
    21,435.64x = 29,580.98 × 12,004.36
  4. Step 4: Simplify right side
    21,435.64x = 355,100,733.07
  5. Step 5: Solve for x
    x = 355,100,733.07/21,435.64
  6. Step 6: Final answer
    x = 16,565.90

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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.