Home / 20,954.76-28,963.80-18,417.84

Finding the Fourth Proportional to 20,954.76, 28,963.80 and 18,417.84

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Solution

The fourth proportional to 20,954.76, 28,963.80 and 18,417.84 is: 25,457.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954.76 : 28,963.80 = 18,417.84 : x
  2. Step 2: Convert to fraction form
    20,954.76/28,963.80 = 18,417.84/x
  3. Step 3: Cross multiply
    20,954.76x = 28,963.80 × 18,417.84
  4. Step 4: Simplify right side
    20,954.76x = 533,450,634.19
  5. Step 5: Solve for x
    x = 533,450,634.19/20,954.76
  6. Step 6: Final answer
    x = 25,457.25

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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.