Home / 35,309.78-48,741.38-21,159.89

Finding the Fourth Proportional to 35,309.78, 48,741.38 and 21,159.89

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Solution

The fourth proportional to 35,309.78, 48,741.38 and 21,159.89 is: 29,208.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,309.78 : 48,741.38 = 21,159.89 : x
  2. Step 2: Convert to fraction form
    35,309.78/48,741.38 = 21,159.89/x
  3. Step 3: Cross multiply
    35,309.78x = 48,741.38 × 21,159.89
  4. Step 4: Simplify right side
    35,309.78x = 1,031,361,889.74
  5. Step 5: Solve for x
    x = 1,031,361,889.74/35,309.78
  6. Step 6: Final answer
    x = 29,208.96

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1.5x scale

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.