Home / 21,715.06-29,966.79-11,779.06

Finding the Fourth Proportional to 21,715.06, 29,966.79 and 11,779.06

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Solution

The fourth proportional to 21,715.06, 29,966.79 and 11,779.06 is: 16,255.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,715.06 : 29,966.79 = 11,779.06 : x
  2. Step 2: Convert to fraction form
    21,715.06/29,966.79 = 11,779.06/x
  3. Step 3: Cross multiply
    21,715.06x = 29,966.79 × 11,779.06
  4. Step 4: Simplify right side
    21,715.06x = 352,980,617.42
  5. Step 5: Solve for x
    x = 352,980,617.42/21,715.06
  6. Step 6: Final answer
    x = 16,255.11

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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.