Home / 12,840.57-19,229.38-10,605.74

Finding the Fourth Proportional to 12,840.57, 19,229.38 and 10,605.74

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Solution

The fourth proportional to 12,840.57, 19,229.38 and 10,605.74 is: 15,882.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,840.57 : 19,229.38 = 10,605.74 : x
  2. Step 2: Convert to fraction form
    12,840.57/19,229.38 = 10,605.74/x
  3. Step 3: Cross multiply
    12,840.57x = 19,229.38 × 10,605.74
  4. Step 4: Simplify right side
    12,840.57x = 203,941,681.98
  5. Step 5: Solve for x
    x = 203,941,681.98/12,840.57
  6. Step 6: Final answer
    x = 15,882.60

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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.