Home / 14,013.10-21,019.68-4,159.78

Finding the Fourth Proportional to 14,013.10, 21,019.68 and 4,159.78

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Solution

The fourth proportional to 14,013.10, 21,019.68 and 4,159.78 is: 6,239.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,013.10 : 21,019.68 = 4,159.78 : x
  2. Step 2: Convert to fraction form
    14,013.10/21,019.68 = 4,159.78/x
  3. Step 3: Cross multiply
    14,013.10x = 21,019.68 × 4,159.78
  4. Step 4: Simplify right side
    14,013.10x = 87,437,244.47
  5. Step 5: Solve for x
    x = 87,437,244.47/14,013.10
  6. Step 6: Final answer
    x = 6,239.68

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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.