Home / 14,985.42-20,679.85-8,271.05

Finding the Fourth Proportional to 14,985.42, 20,679.85 and 8,271.05

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Solution

The fourth proportional to 14,985.42, 20,679.85 and 8,271.05 is: 11,414.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,985.42 : 20,679.85 = 8,271.05 : x
  2. Step 2: Convert to fraction form
    14,985.42/20,679.85 = 8,271.05/x
  3. Step 3: Cross multiply
    14,985.42x = 20,679.85 × 8,271.05
  4. Step 4: Simplify right side
    14,985.42x = 171,044,073.34
  5. Step 5: Solve for x
    x = 171,044,073.34/14,985.42
  6. Step 6: Final answer
    x = 11,414.03

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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.