Home / 20,349.36-28,066.32-13,632.84

Finding the Fourth Proportional to 20,349.36, 28,066.32 and 13,632.84

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Solution

The fourth proportional to 20,349.36, 28,066.32 and 13,632.84 is: 18,802.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.36 : 28,066.32 = 13,632.84 : x
  2. Step 2: Convert to fraction form
    20,349.36/28,066.32 = 13,632.84/x
  3. Step 3: Cross multiply
    20,349.36x = 28,066.32 × 13,632.84
  4. Step 4: Simplify right side
    20,349.36x = 382,623,649.95
  5. Step 5: Solve for x
    x = 382,623,649.95/20,349.36
  6. Step 6: Final answer
    x = 18,802.74

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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.