Home / 14,487.72-19,988.38-8,113.36

Finding the Fourth Proportional to 14,487.72, 19,988.38 and 8,113.36

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Solution

The fourth proportional to 14,487.72, 19,988.38 and 8,113.36 is: 11,193.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,487.72 : 19,988.38 = 8,113.36 : x
  2. Step 2: Convert to fraction form
    14,487.72/19,988.38 = 8,113.36/x
  3. Step 3: Cross multiply
    14,487.72x = 19,988.38 × 8,113.36
  4. Step 4: Simplify right side
    14,487.72x = 162,172,922.76
  5. Step 5: Solve for x
    x = 162,172,922.76/14,487.72
  6. Step 6: Final answer
    x = 11,193.82

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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.