Home / 20,270.69-30,407.65-7,126.01

Finding the Fourth Proportional to 20,270.69, 30,407.65 and 7,126.01

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Solution

The fourth proportional to 20,270.69, 30,407.65 and 7,126.01 is: 10,689.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.69 : 30,407.65 = 7,126.01 : x
  2. Step 2: Convert to fraction form
    20,270.69/30,407.65 = 7,126.01/x
  3. Step 3: Cross multiply
    20,270.69x = 30,407.65 × 7,126.01
  4. Step 4: Simplify right side
    20,270.69x = 216,685,202.24
  5. Step 5: Solve for x
    x = 216,685,202.24/20,270.69
  6. Step 6: Final answer
    x = 10,689.58

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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.