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Finding the Fourth Proportional to 39,390.94, 59,086.47 and 11,688.94

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Solution

The fourth proportional to 39,390.94, 59,086.47 and 11,688.94 is: 17,533.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,390.94 : 59,086.47 = 11,688.94 : x
  2. Step 2: Convert to fraction form
    39,390.94/59,086.47 = 11,688.94/x
  3. Step 3: Cross multiply
    39,390.94x = 59,086.47 × 11,688.94
  4. Step 4: Simplify right side
    39,390.94x = 690,657,907.21
  5. Step 5: Solve for x
    x = 690,657,907.21/39,390.94
  6. Step 6: Final answer
    x = 17,533.42

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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.