Home / 14,145.60-21,202.91-7,114.40

Finding the Fourth Proportional to 14,145.60, 21,202.91 and 7,114.40

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Solution

The fourth proportional to 14,145.60, 21,202.91 and 7,114.40 is: 10,663.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,145.60 : 21,202.91 = 7,114.40 : x
  2. Step 2: Convert to fraction form
    14,145.60/21,202.91 = 7,114.40/x
  3. Step 3: Cross multiply
    14,145.60x = 21,202.91 × 7,114.40
  4. Step 4: Simplify right side
    14,145.60x = 150,845,841.32
  5. Step 5: Solve for x
    x = 150,845,841.32/14,145.60
  6. Step 6: Final answer
    x = 10,663.80

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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.