Home / 13,561.31-20,342.93-4,200.13

Finding the Fourth Proportional to 13,561.31, 20,342.93 and 4,200.13

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Solution

The fourth proportional to 13,561.31, 20,342.93 and 4,200.13 is: 6,300.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.31 : 20,342.93 = 4,200.13 : x
  2. Step 2: Convert to fraction form
    13,561.31/20,342.93 = 4,200.13/x
  3. Step 3: Cross multiply
    13,561.31x = 20,342.93 × 4,200.13
  4. Step 4: Simplify right side
    13,561.31x = 85,442,950.58
  5. Step 5: Solve for x
    x = 85,442,950.58/13,561.31
  6. Step 6: Final answer
    x = 6,300.49

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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.