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Finding the Fourth Proportional to 53,347.80, 80,019.60 and 13,905.24

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Solution

The fourth proportional to 53,347.80, 80,019.60 and 13,905.24 is: 20,857.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,347.80 : 80,019.60 = 13,905.24 : x
  2. Step 2: Convert to fraction form
    53,347.80/80,019.60 = 13,905.24/x
  3. Step 3: Cross multiply
    53,347.80x = 80,019.60 × 13,905.24
  4. Step 4: Simplify right side
    53,347.80x = 1,112,691,742.70
  5. Step 5: Solve for x
    x = 1,112,691,742.70/53,347.80
  6. Step 6: Final answer
    x = 20,857.31

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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.