Home / 19,425.90-29,142.66-7,740.30

Finding the Fourth Proportional to 19,425.90, 29,142.66 and 7,740.30

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Solution

The fourth proportional to 19,425.90, 29,142.66 and 7,740.30 is: 11,611.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,425.90 : 29,142.66 = 7,740.30 : x
  2. Step 2: Convert to fraction form
    19,425.90/29,142.66 = 7,740.30/x
  3. Step 3: Cross multiply
    19,425.90x = 29,142.66 × 7,740.30
  4. Step 4: Simplify right side
    19,425.90x = 225,572,931.20
  5. Step 5: Solve for x
    x = 225,572,931.20/19,425.90
  6. Step 6: Final answer
    x = 11,611.97

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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.