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Finding the Fourth Proportional to 14,007.10, 21,010.65 and 12,597.70

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Solution

The fourth proportional to 14,007.10, 21,010.65 and 12,597.70 is: 18,896.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,007.10 : 21,010.65 = 12,597.70 : x
  2. Step 2: Convert to fraction form
    14,007.10/21,010.65 = 12,597.70/x
  3. Step 3: Cross multiply
    14,007.10x = 21,010.65 × 12,597.70
  4. Step 4: Simplify right side
    14,007.10x = 264,685,865.51
  5. Step 5: Solve for x
    x = 264,685,865.51/14,007.10
  6. Step 6: Final answer
    x = 18,896.55

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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.