Home / 20,261.48-30,392.04-7,110.78

Finding the Fourth Proportional to 20,261.48, 30,392.04 and 7,110.78

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Solution

The fourth proportional to 20,261.48, 30,392.04 and 7,110.78 is: 10,666.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,261.48 : 30,392.04 = 7,110.78 : x
  2. Step 2: Convert to fraction form
    20,261.48/30,392.04 = 7,110.78/x
  3. Step 3: Cross multiply
    20,261.48x = 30,392.04 × 7,110.78
  4. Step 4: Simplify right side
    20,261.48x = 216,111,110.19
  5. Step 5: Solve for x
    x = 216,111,110.19/20,261.48
  6. Step 6: Final answer
    x = 10,666.11

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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.