Home / 35,430.48-53,012.64-21,688.80

Finding the Fourth Proportional to 35,430.48, 53,012.64 and 21,688.80

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Solution

The fourth proportional to 35,430.48, 53,012.64 and 21,688.80 is: 32,451.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,430.48 : 53,012.64 = 21,688.80 : x
  2. Step 2: Convert to fraction form
    35,430.48/53,012.64 = 21,688.80/x
  3. Step 3: Cross multiply
    35,430.48x = 53,012.64 × 21,688.80
  4. Step 4: Simplify right side
    35,430.48x = 1,149,780,546.43
  5. Step 5: Solve for x
    x = 1,149,780,546.43/35,430.48
  6. Step 6: Final answer
    x = 32,451.73

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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.