Home / 20,705.16-28,572.48-11,752.50

Finding the Fourth Proportional to 20,705.16, 28,572.48 and 11,752.50

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Solution

The fourth proportional to 20,705.16, 28,572.48 and 11,752.50 is: 16,218.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.16 : 28,572.48 = 11,752.50 : x
  2. Step 2: Convert to fraction form
    20,705.16/28,572.48 = 11,752.50/x
  3. Step 3: Cross multiply
    20,705.16x = 28,572.48 × 11,752.50
  4. Step 4: Simplify right side
    20,705.16x = 335,798,071.20
  5. Step 5: Solve for x
    x = 335,798,071.20/20,705.16
  6. Step 6: Final answer
    x = 16,218.09

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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.