Home / 10,938.39-16,407.58-3,147.20

Finding the Fourth Proportional to 10,938.39, 16,407.58 and 3,147.20

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Solution

The fourth proportional to 10,938.39, 16,407.58 and 3,147.20 is: 4,720.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,938.39 : 16,407.58 = 3,147.20 : x
  2. Step 2: Convert to fraction form
    10,938.39/16,407.58 = 3,147.20/x
  3. Step 3: Cross multiply
    10,938.39x = 16,407.58 × 3,147.20
  4. Step 4: Simplify right side
    10,938.39x = 51,637,913.30
  5. Step 5: Solve for x
    x = 51,637,913.30/10,938.39
  6. Step 6: Final answer
    x = 4,720.80

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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.