Home / 14,005.10-21,007.65-12,887.30

Finding the Fourth Proportional to 14,005.10, 21,007.65 and 12,887.30

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Solution

The fourth proportional to 14,005.10, 21,007.65 and 12,887.30 is: 19,330.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,005.10 : 21,007.65 = 12,887.30 : x
  2. Step 2: Convert to fraction form
    14,005.10/21,007.65 = 12,887.30/x
  3. Step 3: Cross multiply
    14,005.10x = 21,007.65 × 12,887.30
  4. Step 4: Simplify right side
    14,005.10x = 270,731,887.85
  5. Step 5: Solve for x
    x = 270,731,887.85/14,005.10
  6. Step 6: Final answer
    x = 19,330.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.