Home / 13,477.47-20,219.87-7,638.18

Finding the Fourth Proportional to 13,477.47, 20,219.87 and 7,638.18

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Solution

The fourth proportional to 13,477.47, 20,219.87 and 7,638.18 is: 11,459.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,477.47 : 20,219.87 = 7,638.18 : x
  2. Step 2: Convert to fraction form
    13,477.47/20,219.87 = 7,638.18/x
  3. Step 3: Cross multiply
    13,477.47x = 20,219.87 × 7,638.18
  4. Step 4: Simplify right side
    13,477.47x = 154,442,968.45
  5. Step 5: Solve for x
    x = 154,442,968.45/13,477.47
  6. Step 6: Final answer
    x = 11,459.34

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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.