Home / 15,258.48-21,051.92-8,543.20

Finding the Fourth Proportional to 15,258.48, 21,051.92 and 8,543.20

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Solution

The fourth proportional to 15,258.48, 21,051.92 and 8,543.20 is: 11,786.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,258.48 : 21,051.92 = 8,543.20 : x
  2. Step 2: Convert to fraction form
    15,258.48/21,051.92 = 8,543.20/x
  3. Step 3: Cross multiply
    15,258.48x = 21,051.92 × 8,543.20
  4. Step 4: Simplify right side
    15,258.48x = 179,850,762.94
  5. Step 5: Solve for x
    x = 179,850,762.94/15,258.48
  6. Step 6: Final answer
    x = 11,786.94

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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.