Home / 20,847.17-31,270.59-17,719.76

Finding the Fourth Proportional to 20,847.17, 31,270.59 and 17,719.76

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Solution

The fourth proportional to 20,847.17, 31,270.59 and 17,719.76 is: 26,579.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.17 : 31,270.59 = 17,719.76 : x
  2. Step 2: Convert to fraction form
    20,847.17/31,270.59 = 17,719.76/x
  3. Step 3: Cross multiply
    20,847.17x = 31,270.59 × 17,719.76
  4. Step 4: Simplify right side
    20,847.17x = 554,107,193.51
  5. Step 5: Solve for x
    x = 554,107,193.51/20,847.17
  6. Step 6: Final answer
    x = 26,579.50

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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.