Home / 19,406.85-29,089.21-12,740.55

Finding the Fourth Proportional to 19,406.85, 29,089.21 and 12,740.55

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Solution

The fourth proportional to 19,406.85, 29,089.21 and 12,740.55 is: 19,097.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,406.85 : 29,089.21 = 12,740.55 : x
  2. Step 2: Convert to fraction form
    19,406.85/29,089.21 = 12,740.55/x
  3. Step 3: Cross multiply
    19,406.85x = 29,089.21 × 12,740.55
  4. Step 4: Simplify right side
    19,406.85x = 370,612,534.47
  5. Step 5: Solve for x
    x = 370,612,534.47/19,406.85
  6. Step 6: Final answer
    x = 19,097.00

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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.