Home / 30,832.19-42,519.54-20,465.60

Finding the Fourth Proportional to 30,832.19, 42,519.54 and 20,465.60

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Solution

The fourth proportional to 30,832.19, 42,519.54 and 20,465.60 is: 28,223.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,832.19 : 42,519.54 = 20,465.60 : x
  2. Step 2: Convert to fraction form
    30,832.19/42,519.54 = 20,465.60/x
  3. Step 3: Cross multiply
    30,832.19x = 42,519.54 × 20,465.60
  4. Step 4: Simplify right side
    30,832.19x = 870,187,897.82
  5. Step 5: Solve for x
    x = 870,187,897.82/30,832.19
  6. Step 6: Final answer
    x = 28,223.36

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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.