Home / 20,625.54-28,448.53-18,929.51

Finding the Fourth Proportional to 20,625.54, 28,448.53 and 18,929.51

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Solution

The fourth proportional to 20,625.54, 28,448.53 and 18,929.51 is: 26,109.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,625.54 : 28,448.53 = 18,929.51 : x
  2. Step 2: Convert to fraction form
    20,625.54/28,448.53 = 18,929.51/x
  3. Step 3: Cross multiply
    20,625.54x = 28,448.53 × 18,929.51
  4. Step 4: Simplify right side
    20,625.54x = 538,516,733.12
  5. Step 5: Solve for x
    x = 538,516,733.12/20,625.54
  6. Step 6: Final answer
    x = 26,109.22

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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.