Home / 39,442.12-59,172.60-12,788.12

Finding the Fourth Proportional to 39,442.12, 59,172.60 and 12,788.12

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Solution

The fourth proportional to 39,442.12, 59,172.60 and 12,788.12 is: 19,185.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,442.12 : 59,172.60 = 12,788.12 : x
  2. Step 2: Convert to fraction form
    39,442.12/59,172.60 = 12,788.12/x
  3. Step 3: Cross multiply
    39,442.12x = 59,172.60 × 12,788.12
  4. Step 4: Simplify right side
    39,442.12x = 756,706,309.51
  5. Step 5: Solve for x
    x = 756,706,309.51/39,442.12
  6. Step 6: Final answer
    x = 19,185.23

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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.