Home / 39,659.83-54,730.18-21,754.88

Finding the Fourth Proportional to 39,659.83, 54,730.18 and 21,754.88

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Solution

The fourth proportional to 39,659.83, 54,730.18 and 21,754.88 is: 30,021.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,659.83 : 54,730.18 = 21,754.88 : x
  2. Step 2: Convert to fraction form
    39,659.83/54,730.18 = 21,754.88/x
  3. Step 3: Cross multiply
    39,659.83x = 54,730.18 × 21,754.88
  4. Step 4: Simplify right side
    39,659.83x = 1,190,648,457.06
  5. Step 5: Solve for x
    x = 1,190,648,457.06/39,659.83
  6. Step 6: Final answer
    x = 30,021.52

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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.