Home / 15,108.42-20,852.12-12,586.53

Finding the Fourth Proportional to 15,108.42, 20,852.12 and 12,586.53

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Solution

The fourth proportional to 15,108.42, 20,852.12 and 12,586.53 is: 17,371.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,108.42 : 20,852.12 = 12,586.53 : x
  2. Step 2: Convert to fraction form
    15,108.42/20,852.12 = 12,586.53/x
  3. Step 3: Cross multiply
    15,108.42x = 20,852.12 × 12,586.53
  4. Step 4: Simplify right side
    15,108.42x = 262,455,771.01
  5. Step 5: Solve for x
    x = 262,455,771.01/15,108.42
  6. Step 6: Final answer
    x = 17,371.49

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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.