Home / 23,330.79-32,195.56-12,720.20

Finding the Fourth Proportional to 23,330.79, 32,195.56 and 12,720.20

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Solution

The fourth proportional to 23,330.79, 32,195.56 and 12,720.20 is: 17,553.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,330.79 : 32,195.56 = 12,720.20 : x
  2. Step 2: Convert to fraction form
    23,330.79/32,195.56 = 12,720.20/x
  3. Step 3: Cross multiply
    23,330.79x = 32,195.56 × 12,720.20
  4. Step 4: Simplify right side
    23,330.79x = 409,533,962.31
  5. Step 5: Solve for x
    x = 409,533,962.31/23,330.79
  6. Step 6: Final answer
    x = 17,553.37

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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.