Home / 22,688.76-31,334.40-20,215.02

Finding the Fourth Proportional to 22,688.76, 31,334.40 and 20,215.02

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Solution

The fourth proportional to 22,688.76, 31,334.40 and 20,215.02 is: 27,918.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,688.76 : 31,334.40 = 20,215.02 : x
  2. Step 2: Convert to fraction form
    22,688.76/31,334.40 = 20,215.02/x
  3. Step 3: Cross multiply
    22,688.76x = 31,334.40 × 20,215.02
  4. Step 4: Simplify right side
    22,688.76x = 633,425,522.69
  5. Step 5: Solve for x
    x = 633,425,522.69/22,688.76
  6. Step 6: Final answer
    x = 27,918.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.