Home / 13,420.08-20,127.60-4,653.20

Finding the Fourth Proportional to 13,420.08, 20,127.60 and 4,653.20

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Solution

The fourth proportional to 13,420.08, 20,127.60 and 4,653.20 is: 6,978.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.08 : 20,127.60 = 4,653.20 : x
  2. Step 2: Convert to fraction form
    13,420.08/20,127.60 = 4,653.20/x
  3. Step 3: Cross multiply
    13,420.08x = 20,127.60 × 4,653.20
  4. Step 4: Simplify right side
    13,420.08x = 93,657,748.32
  5. Step 5: Solve for x
    x = 93,657,748.32/13,420.08
  6. Step 6: Final answer
    x = 6,978.93

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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.