Home / 20,127.69-30,207.47-10,646.74

Finding the Fourth Proportional to 20,127.69, 30,207.47 and 10,646.74

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Solution

The fourth proportional to 20,127.69, 30,207.47 and 10,646.74 is: 15,978.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.69 : 30,207.47 = 10,646.74 : x
  2. Step 2: Convert to fraction form
    20,127.69/30,207.47 = 10,646.74/x
  3. Step 3: Cross multiply
    20,127.69x = 30,207.47 × 10,646.74
  4. Step 4: Simplify right side
    20,127.69x = 321,611,079.15
  5. Step 5: Solve for x
    x = 321,611,079.15/20,127.69
  6. Step 6: Final answer
    x = 15,978.54

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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.