Home / 13,946.78-20,920.18-3,558.53

Finding the Fourth Proportional to 13,946.78, 20,920.18 and 3,558.53

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Solution

The fourth proportional to 13,946.78, 20,920.18 and 3,558.53 is: 5,337.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,946.78 : 20,920.18 = 3,558.53 : x
  2. Step 2: Convert to fraction form
    13,946.78/20,920.18 = 3,558.53/x
  3. Step 3: Cross multiply
    13,946.78x = 20,920.18 × 3,558.53
  4. Step 4: Simplify right side
    13,946.78x = 74,445,088.14
  5. Step 5: Solve for x
    x = 74,445,088.14/13,946.78
  6. Step 6: Final answer
    x = 5,337.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.