Home / 13,261.48-18,281.58-9,270.22

Finding the Fourth Proportional to 13,261.48, 18,281.58 and 9,270.22

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Solution

The fourth proportional to 13,261.48, 18,281.58 and 9,270.22 is: 12,779.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,261.48 : 18,281.58 = 9,270.22 : x
  2. Step 2: Convert to fraction form
    13,261.48/18,281.58 = 9,270.22/x
  3. Step 3: Cross multiply
    13,261.48x = 18,281.58 × 9,270.22
  4. Step 4: Simplify right side
    13,261.48x = 169,474,268.55
  5. Step 5: Solve for x
    x = 169,474,268.55/13,261.48
  6. Step 6: Final answer
    x = 12,779.44

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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.