Home / 13,430.31-20,144.08-3,570.58

Finding the Fourth Proportional to 13,430.31, 20,144.08 and 3,570.58

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Solution

The fourth proportional to 13,430.31, 20,144.08 and 3,570.58 is: 5,355.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.31 : 20,144.08 = 3,570.58 : x
  2. Step 2: Convert to fraction form
    13,430.31/20,144.08 = 3,570.58/x
  3. Step 3: Cross multiply
    13,430.31x = 20,144.08 × 3,570.58
  4. Step 4: Simplify right side
    13,430.31x = 71,926,049.17
  5. Step 5: Solve for x
    x = 71,926,049.17/13,430.31
  6. Step 6: Final answer
    x = 5,355.50

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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.