Home / 12,281.12-18,421.53-7,352.13

Finding the Fourth Proportional to 12,281.12, 18,421.53 and 7,352.13

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Solution

The fourth proportional to 12,281.12, 18,421.53 and 7,352.13 is: 11,028.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.12 : 18,421.53 = 7,352.13 : x
  2. Step 2: Convert to fraction form
    12,281.12/18,421.53 = 7,352.13/x
  3. Step 3: Cross multiply
    12,281.12x = 18,421.53 × 7,352.13
  4. Step 4: Simplify right side
    12,281.12x = 135,437,483.36
  5. Step 5: Solve for x
    x = 135,437,483.36/12,281.12
  6. Step 6: Final answer
    x = 11,028.11

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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.