Home / 13,615.02-20,416.95-4,251.90

Finding the Fourth Proportional to 13,615.02, 20,416.95 and 4,251.90

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Solution

The fourth proportional to 13,615.02, 20,416.95 and 4,251.90 is: 6,376.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.02 : 20,416.95 = 4,251.90 : x
  2. Step 2: Convert to fraction form
    13,615.02/20,416.95 = 4,251.90/x
  3. Step 3: Cross multiply
    13,615.02x = 20,416.95 × 4,251.90
  4. Step 4: Simplify right side
    13,615.02x = 86,810,829.71
  5. Step 5: Solve for x
    x = 86,810,829.71/13,615.02
  6. Step 6: Final answer
    x = 6,376.11

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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.