Home / 20,531.54-28,337.93-12,973.07

Finding the Fourth Proportional to 20,531.54, 28,337.93 and 12,973.07

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Solution

The fourth proportional to 20,531.54, 28,337.93 and 12,973.07 is: 17,905.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.54 : 28,337.93 = 12,973.07 : x
  2. Step 2: Convert to fraction form
    20,531.54/28,337.93 = 12,973.07/x
  3. Step 3: Cross multiply
    20,531.54x = 28,337.93 × 12,973.07
  4. Step 4: Simplify right side
    20,531.54x = 367,629,742.99
  5. Step 5: Solve for x
    x = 367,629,742.99/20,531.54
  6. Step 6: Final answer
    x = 17,905.61

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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.