Home / 12,798.40-19,200.21-7,254.22

Finding the Fourth Proportional to 12,798.40, 19,200.21 and 7,254.22

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Solution

The fourth proportional to 12,798.40, 19,200.21 and 7,254.22 is: 10,882.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798.40 : 19,200.21 = 7,254.22 : x
  2. Step 2: Convert to fraction form
    12,798.40/19,200.21 = 7,254.22/x
  3. Step 3: Cross multiply
    12,798.40x = 19,200.21 × 7,254.22
  4. Step 4: Simplify right side
    12,798.40x = 139,282,472.18
  5. Step 5: Solve for x
    x = 139,282,472.18/12,798.40
  6. Step 6: Final answer
    x = 10,882.81

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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.