Home / 13,543.88-20,315.21-5,643.14

Finding the Fourth Proportional to 13,543.88, 20,315.21 and 5,643.14

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Solution

The fourth proportional to 13,543.88, 20,315.21 and 5,643.14 is: 8,464.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.88 : 20,315.21 = 5,643.14 : x
  2. Step 2: Convert to fraction form
    13,543.88/20,315.21 = 5,643.14/x
  3. Step 3: Cross multiply
    13,543.88x = 20,315.21 × 5,643.14
  4. Step 4: Simplify right side
    13,543.88x = 114,641,444.37
  5. Step 5: Solve for x
    x = 114,641,444.37/13,543.88
  6. Step 6: Final answer
    x = 8,464.45

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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.