Home / 12,975.40-19,463.10-7,426.60

Finding the Fourth Proportional to 12,975.40, 19,463.10 and 7,426.60

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Solution

The fourth proportional to 12,975.40, 19,463.10 and 7,426.60 is: 11,139.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,975.40 : 19,463.10 = 7,426.60 : x
  2. Step 2: Convert to fraction form
    12,975.40/19,463.10 = 7,426.60/x
  3. Step 3: Cross multiply
    12,975.40x = 19,463.10 × 7,426.60
  4. Step 4: Simplify right side
    12,975.40x = 144,544,658.46
  5. Step 5: Solve for x
    x = 144,544,658.46/12,975.40
  6. Step 6: Final answer
    x = 11,139.90

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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.