Home / 21,060.90-29,066.72-12,107.57

Finding the Fourth Proportional to 21,060.90, 29,066.72 and 12,107.57

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Solution

The fourth proportional to 21,060.90, 29,066.72 and 12,107.57 is: 16,709.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.90 : 29,066.72 = 12,107.57 : x
  2. Step 2: Convert to fraction form
    21,060.90/29,066.72 = 12,107.57/x
  3. Step 3: Cross multiply
    21,060.90x = 29,066.72 × 12,107.57
  4. Step 4: Simplify right side
    21,060.90x = 351,927,141.20
  5. Step 5: Solve for x
    x = 351,927,141.20/21,060.90
  6. Step 6: Final answer
    x = 16,709.98

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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.