Home / 21,167.85-29,210.08-11,606.21

Finding the Fourth Proportional to 21,167.85, 29,210.08 and 11,606.21

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Solution

The fourth proportional to 21,167.85, 29,210.08 and 11,606.21 is: 16,015.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.85 : 29,210.08 = 11,606.21 : x
  2. Step 2: Convert to fraction form
    21,167.85/29,210.08 = 11,606.21/x
  3. Step 3: Cross multiply
    21,167.85x = 29,210.08 × 11,606.21
  4. Step 4: Simplify right side
    21,167.85x = 339,018,322.60
  5. Step 5: Solve for x
    x = 339,018,322.60/21,167.85
  6. Step 6: Final answer
    x = 16,015.72

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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.