Home / 14,490.40-21,703.20-7,556.80

Finding the Fourth Proportional to 14,490.40, 21,703.20 and 7,556.80

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Solution

The fourth proportional to 14,490.40, 21,703.20 and 7,556.80 is: 11,318.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,490.40 : 21,703.20 = 7,556.80 : x
  2. Step 2: Convert to fraction form
    14,490.40/21,703.20 = 7,556.80/x
  3. Step 3: Cross multiply
    14,490.40x = 21,703.20 × 7,556.80
  4. Step 4: Simplify right side
    14,490.40x = 164,006,741.76
  5. Step 5: Solve for x
    x = 164,006,741.76/14,490.40
  6. Step 6: Final answer
    x = 11,318.30

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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.