Home / 13,421.48-18,520.72-7,452.84

Finding the Fourth Proportional to 13,421.48, 18,520.72 and 7,452.84

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Solution

The fourth proportional to 13,421.48, 18,520.72 and 7,452.84 is: 10,284.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.48 : 18,520.72 = 7,452.84 : x
  2. Step 2: Convert to fraction form
    13,421.48/18,520.72 = 7,452.84/x
  3. Step 3: Cross multiply
    13,421.48x = 18,520.72 × 7,452.84
  4. Step 4: Simplify right side
    13,421.48x = 138,031,962.84
  5. Step 5: Solve for x
    x = 138,031,962.84/13,421.48
  6. Step 6: Final answer
    x = 10,284.41

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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.