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Finding the Fourth Proportional to 12,655.98, 18,980.93 and 4,756.25

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Solution

The fourth proportional to 12,655.98, 18,980.93 and 4,756.25 is: 7,133.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.98 : 18,980.93 = 4,756.25 : x
  2. Step 2: Convert to fraction form
    12,655.98/18,980.93 = 4,756.25/x
  3. Step 3: Cross multiply
    12,655.98x = 18,980.93 × 4,756.25
  4. Step 4: Simplify right side
    12,655.98x = 90,278,107.66
  5. Step 5: Solve for x
    x = 90,278,107.66/12,655.98
  6. Step 6: Final answer
    x = 7,133.24

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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.