Home / 20,627.19-28,466.01-12,664.89

Finding the Fourth Proportional to 20,627.19, 28,466.01 and 12,664.89

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Solution

The fourth proportional to 20,627.19, 28,466.01 and 12,664.89 is: 17,477.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.19 : 28,466.01 = 12,664.89 : x
  2. Step 2: Convert to fraction form
    20,627.19/28,466.01 = 12,664.89/x
  3. Step 3: Cross multiply
    20,627.19x = 28,466.01 × 12,664.89
  4. Step 4: Simplify right side
    20,627.19x = 360,518,885.39
  5. Step 5: Solve for x
    x = 360,518,885.39/20,627.19
  6. Step 6: Final answer
    x = 17,477.85

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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.