Home / 39,786.20-59,666.54-13,126.21

Finding the Fourth Proportional to 39,786.20, 59,666.54 and 13,126.21

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Solution

The fourth proportional to 39,786.20, 59,666.54 and 13,126.21 is: 19,685.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,786.20 : 59,666.54 = 13,126.21 : x
  2. Step 2: Convert to fraction form
    39,786.20/59,666.54 = 13,126.21/x
  3. Step 3: Cross multiply
    39,786.20x = 59,666.54 × 13,126.21
  4. Step 4: Simplify right side
    39,786.20x = 783,195,319.22
  5. Step 5: Solve for x
    x = 783,195,319.22/39,786.20
  6. Step 6: Final answer
    x = 19,685.10

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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.