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Finding the Fourth Proportional to 12,955.77, 19,437.72 and 4,635.63

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Solution

The fourth proportional to 12,955.77, 19,437.72 and 4,635.63 is: 6,954.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,955.77 : 19,437.72 = 4,635.63 : x
  2. Step 2: Convert to fraction form
    12,955.77/19,437.72 = 4,635.63/x
  3. Step 3: Cross multiply
    12,955.77x = 19,437.72 × 4,635.63
  4. Step 4: Simplify right side
    12,955.77x = 90,106,077.96
  5. Step 5: Solve for x
    x = 90,106,077.96/12,955.77
  6. Step 6: Final answer
    x = 6,954.90

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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.