Home / 15,530.94-21,408.49-13,008.60

Finding the Fourth Proportional to 15,530.94, 21,408.49 and 13,008.60

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Solution

The fourth proportional to 15,530.94, 21,408.49 and 13,008.60 is: 17,931.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,530.94 : 21,408.49 = 13,008.60 : x
  2. Step 2: Convert to fraction form
    15,530.94/21,408.49 = 13,008.60/x
  3. Step 3: Cross multiply
    15,530.94x = 21,408.49 × 13,008.60
  4. Step 4: Simplify right side
    15,530.94x = 278,494,483.01
  5. Step 5: Solve for x
    x = 278,494,483.01/15,530.94
  6. Step 6: Final answer
    x = 17,931.59

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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.