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Finding the Fourth Proportional to 12,976.98, 19,465.47 and 7,426.46

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Solution

The fourth proportional to 12,976.98, 19,465.47 and 7,426.46 is: 11,139.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,976.98 : 19,465.47 = 7,426.46 : x
  2. Step 2: Convert to fraction form
    12,976.98/19,465.47 = 7,426.46/x
  3. Step 3: Cross multiply
    12,976.98x = 19,465.47 × 7,426.46
  4. Step 4: Simplify right side
    12,976.98x = 144,559,437.01
  5. Step 5: Solve for x
    x = 144,559,437.01/12,976.98
  6. Step 6: Final answer
    x = 11,139.68

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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.