Home / 14,109.92-21,146.55-5,780.49

Finding the Fourth Proportional to 14,109.92, 21,146.55 and 5,780.49

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Solution

The fourth proportional to 14,109.92, 21,146.55 and 5,780.49 is: 8,663.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,109.92 : 21,146.55 = 5,780.49 : x
  2. Step 2: Convert to fraction form
    14,109.92/21,146.55 = 5,780.49/x
  3. Step 3: Cross multiply
    14,109.92x = 21,146.55 × 5,780.49
  4. Step 4: Simplify right side
    14,109.92x = 122,237,420.81
  5. Step 5: Solve for x
    x = 122,237,420.81/14,109.92
  6. Step 6: Final answer
    x = 8,663.23

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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.