Home / 39,723.13-54,818.67-21,817.81

Finding the Fourth Proportional to 39,723.13, 54,818.67 and 21,817.81

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Solution

The fourth proportional to 39,723.13, 54,818.67 and 21,817.81 is: 30,108.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,723.13 : 54,818.67 = 21,817.81 : x
  2. Step 2: Convert to fraction form
    39,723.13/54,818.67 = 21,817.81/x
  3. Step 3: Cross multiply
    39,723.13x = 54,818.67 × 21,817.81
  4. Step 4: Simplify right side
    39,723.13x = 1,196,023,326.51
  5. Step 5: Solve for x
    x = 1,196,023,326.51/39,723.13
  6. Step 6: Final answer
    x = 30,108.99

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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.