Home / 14,021.40-19,344.67-8,988.39

Finding the Fourth Proportional to 14,021.40, 19,344.67 and 8,988.39

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Solution

The fourth proportional to 14,021.40, 19,344.67 and 8,988.39 is: 12,400.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,021.40 : 19,344.67 = 8,988.39 : x
  2. Step 2: Convert to fraction form
    14,021.40/19,344.67 = 8,988.39/x
  3. Step 3: Cross multiply
    14,021.40x = 19,344.67 × 8,988.39
  4. Step 4: Simplify right side
    14,021.40x = 173,877,520.88
  5. Step 5: Solve for x
    x = 173,877,520.88/14,021.40
  6. Step 6: Final answer
    x = 12,400.87

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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.