Home / 14,390.60-21,564.30-12,187.40

Finding the Fourth Proportional to 14,390.60, 21,564.30 and 12,187.40

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Solution

The fourth proportional to 14,390.60, 21,564.30 and 12,187.40 is: 18,262.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,390.60 : 21,564.30 = 12,187.40 : x
  2. Step 2: Convert to fraction form
    14,390.60/21,564.30 = 12,187.40/x
  3. Step 3: Cross multiply
    14,390.60x = 21,564.30 × 12,187.40
  4. Step 4: Simplify right side
    14,390.60x = 262,812,749.82
  5. Step 5: Solve for x
    x = 262,812,749.82/14,390.60
  6. Step 6: Final answer
    x = 18,262.81

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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.