Home / 14,421.96-21,595.56-12,355.20

Finding the Fourth Proportional to 14,421.96, 21,595.56 and 12,355.20

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Solution

The fourth proportional to 14,421.96, 21,595.56 and 12,355.20 is: 18,500.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,421.96 : 21,595.56 = 12,355.20 : x
  2. Step 2: Convert to fraction form
    14,421.96/21,595.56 = 12,355.20/x
  3. Step 3: Cross multiply
    14,421.96x = 21,595.56 × 12,355.20
  4. Step 4: Simplify right side
    14,421.96x = 266,817,462.91
  5. Step 5: Solve for x
    x = 266,817,462.91/14,421.96
  6. Step 6: Final answer
    x = 18,500.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.