Home / 13,541.64-20,315.70-4,778.52

Finding the Fourth Proportional to 13,541.64, 20,315.70 and 4,778.52

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Solution

The fourth proportional to 13,541.64, 20,315.70 and 4,778.52 is: 7,168.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,541.64 : 20,315.70 = 4,778.52 : x
  2. Step 2: Convert to fraction form
    13,541.64/20,315.70 = 4,778.52/x
  3. Step 3: Cross multiply
    13,541.64x = 20,315.70 × 4,778.52
  4. Step 4: Simplify right side
    13,541.64x = 97,078,978.76
  5. Step 5: Solve for x
    x = 97,078,978.76/13,541.64
  6. Step 6: Final answer
    x = 7,168.92

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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.