Home / 13,420.55-18,537.80-10,214.37

Finding the Fourth Proportional to 13,420.55, 18,537.80 and 10,214.37

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Solution

The fourth proportional to 13,420.55, 18,537.80 and 10,214.37 is: 14,109.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.55 : 18,537.80 = 10,214.37 : x
  2. Step 2: Convert to fraction form
    13,420.55/18,537.80 = 10,214.37/x
  3. Step 3: Cross multiply
    13,420.55x = 18,537.80 × 10,214.37
  4. Step 4: Simplify right side
    13,420.55x = 189,351,948.19
  5. Step 5: Solve for x
    x = 189,351,948.19/13,420.55
  6. Step 6: Final answer
    x = 14,109.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.