Home / 31,720.32-43,762.77-18,964.62

Finding the Fourth Proportional to 31,720.32, 43,762.77 and 18,964.62

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Solution

The fourth proportional to 31,720.32, 43,762.77 and 18,964.62 is: 26,164.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,720.32 : 43,762.77 = 18,964.62 : x
  2. Step 2: Convert to fraction form
    31,720.32/43,762.77 = 18,964.62/x
  3. Step 3: Cross multiply
    31,720.32x = 43,762.77 × 18,964.62
  4. Step 4: Simplify right side
    31,720.32x = 829,944,303.20
  5. Step 5: Solve for x
    x = 829,944,303.20/31,720.32
  6. Step 6: Final answer
    x = 26,164.44

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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.