Home / 20,739.51-31,111.02-7,588.71

Finding the Fourth Proportional to 20,739.51, 31,111.02 and 7,588.71

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Solution

The fourth proportional to 20,739.51, 31,111.02 and 7,588.71 is: 11,383.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739.51 : 31,111.02 = 7,588.71 : x
  2. Step 2: Convert to fraction form
    20,739.51/31,111.02 = 7,588.71/x
  3. Step 3: Cross multiply
    20,739.51x = 31,111.02 × 7,588.71
  4. Step 4: Simplify right side
    20,739.51x = 236,092,508.58
  5. Step 5: Solve for x
    x = 236,092,508.58/20,739.51
  6. Step 6: Final answer
    x = 11,383.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.