Home / 35,451.60-53,160.48-20,664.78

Finding the Fourth Proportional to 35,451.60, 53,160.48 and 20,664.78

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Solution

The fourth proportional to 35,451.60, 53,160.48 and 20,664.78 is: 30,987.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,451.60 : 53,160.48 = 20,664.78 : x
  2. Step 2: Convert to fraction form
    35,451.60/53,160.48 = 20,664.78/x
  3. Step 3: Cross multiply
    35,451.60x = 53,160.48 × 20,664.78
  4. Step 4: Simplify right side
    35,451.60x = 1,098,549,623.89
  5. Step 5: Solve for x
    x = 1,098,549,623.89/35,451.60
  6. Step 6: Final answer
    x = 30,987.31

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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.