Home / 19,777.60-29,666.40-10,404.80

Finding the Fourth Proportional to 19,777.60, 29,666.40 and 10,404.80

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Solution

The fourth proportional to 19,777.60, 29,666.40 and 10,404.80 is: 15,607.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,777.60 : 29,666.40 = 10,404.80 : x
  2. Step 2: Convert to fraction form
    19,777.60/29,666.40 = 10,404.80/x
  3. Step 3: Cross multiply
    19,777.60x = 29,666.40 × 10,404.80
  4. Step 4: Simplify right side
    19,777.60x = 308,672,958.72
  5. Step 5: Solve for x
    x = 308,672,958.72/19,777.60
  6. Step 6: Final answer
    x = 15,607.20

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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.