Home / 20,852.51-31,278.62-5,270.13

Finding the Fourth Proportional to 20,852.51, 31,278.62 and 5,270.13

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Solution

The fourth proportional to 20,852.51, 31,278.62 and 5,270.13 is: 7,905.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.51 : 31,278.62 = 5,270.13 : x
  2. Step 2: Convert to fraction form
    20,852.51/31,278.62 = 5,270.13/x
  3. Step 3: Cross multiply
    20,852.51x = 31,278.62 × 5,270.13
  4. Step 4: Simplify right side
    20,852.51x = 164,842,406.80
  5. Step 5: Solve for x
    x = 164,842,406.80/20,852.51
  6. Step 6: Final answer
    x = 7,905.16

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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.