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Finding the Fourth Proportional to 39,692.70, 59,547.87 and 13,396.86

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Solution

The fourth proportional to 39,692.70, 59,547.87 and 13,396.86 is: 20,098.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,692.70 : 59,547.87 = 13,396.86 : x
  2. Step 2: Convert to fraction form
    39,692.70/59,547.87 = 13,396.86/x
  3. Step 3: Cross multiply
    39,692.70x = 59,547.87 × 13,396.86
  4. Step 4: Simplify right side
    39,692.70x = 797,754,477.69
  5. Step 5: Solve for x
    x = 797,754,477.69/39,692.70
  6. Step 6: Final answer
    x = 20,098.27

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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.