Home / 31,420.08-43,358.58-17,272.80

Finding the Fourth Proportional to 31,420.08, 43,358.58 and 17,272.80

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Solution

The fourth proportional to 31,420.08, 43,358.58 and 17,272.80 is: 23,835.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,420.08 : 43,358.58 = 17,272.80 : x
  2. Step 2: Convert to fraction form
    31,420.08/43,358.58 = 17,272.80/x
  3. Step 3: Cross multiply
    31,420.08x = 43,358.58 × 17,272.80
  4. Step 4: Simplify right side
    31,420.08x = 748,924,080.62
  5. Step 5: Solve for x
    x = 748,924,080.62/31,420.08
  6. Step 6: Final answer
    x = 23,835.84

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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.