Home / 14,427.20-19,909.68-8,462.40

Finding the Fourth Proportional to 14,427.20, 19,909.68 and 8,462.40

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Solution

The fourth proportional to 14,427.20, 19,909.68 and 8,462.40 is: 11,678.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,427.20 : 19,909.68 = 8,462.40 : x
  2. Step 2: Convert to fraction form
    14,427.20/19,909.68 = 8,462.40/x
  3. Step 3: Cross multiply
    14,427.20x = 19,909.68 × 8,462.40
  4. Step 4: Simplify right side
    14,427.20x = 168,483,676.03
  5. Step 5: Solve for x
    x = 168,483,676.03/14,427.20
  6. Step 6: Final answer
    x = 11,678.20

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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.