Home / 13,421.23-18,521.16-7,452.75

Finding the Fourth Proportional to 13,421.23, 18,521.16 and 7,452.75

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Solution

The fourth proportional to 13,421.23, 18,521.16 and 7,452.75 is: 10,284.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.23 : 18,521.16 = 7,452.75 : x
  2. Step 2: Convert to fraction form
    13,421.23/18,521.16 = 7,452.75/x
  3. Step 3: Cross multiply
    13,421.23x = 18,521.16 × 7,452.75
  4. Step 4: Simplify right side
    13,421.23x = 138,033,575.19
  5. Step 5: Solve for x
    x = 138,033,575.19/13,421.23
  6. Step 6: Final answer
    x = 10,284.72

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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.