Home / 13,905.76-20,860.91-4,543.06

Finding the Fourth Proportional to 13,905.76, 20,860.91 and 4,543.06

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Solution

The fourth proportional to 13,905.76, 20,860.91 and 4,543.06 is: 6,815.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.76 : 20,860.91 = 4,543.06 : x
  2. Step 2: Convert to fraction form
    13,905.76/20,860.91 = 4,543.06/x
  3. Step 3: Cross multiply
    13,905.76x = 20,860.91 × 4,543.06
  4. Step 4: Simplify right side
    13,905.76x = 94,772,261.48
  5. Step 5: Solve for x
    x = 94,772,261.48/13,905.76
  6. Step 6: Final answer
    x = 6,815.33

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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.