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Finding the Fourth Proportional to 40,458.84, 60,688.26 and 12,759

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Solution

The fourth proportional to 40,458.84, 60,688.26 and 12,759 is: 19,138.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,458.84 : 60,688.26 = 12,759 : x
  2. Step 2: Convert to fraction form
    40,458.84/60,688.26 = 12,759/x
  3. Step 3: Cross multiply
    40,458.84x = 60,688.26 × 12,759
  4. Step 4: Simplify right side
    40,458.84x = 774,321,509.34
  5. Step 5: Solve for x
    x = 774,321,509.34/40,458.84
  6. Step 6: Final answer
    x = 19,138.50

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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.