Home / 20,017.25-30,036.59-12,995.61

Finding the Fourth Proportional to 20,017.25, 30,036.59 and 12,995.61

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Solution

The fourth proportional to 20,017.25, 30,036.59 and 12,995.61 is: 19,500.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,017.25 : 30,036.59 = 12,995.61 : x
  2. Step 2: Convert to fraction form
    20,017.25/30,036.59 = 12,995.61/x
  3. Step 3: Cross multiply
    20,017.25x = 30,036.59 × 12,995.61
  4. Step 4: Simplify right side
    20,017.25x = 390,343,857.03
  5. Step 5: Solve for x
    x = 390,343,857.03/20,017.25
  6. Step 6: Final answer
    x = 19,500.37

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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.