Home / 20,981.58-28,957.41-19,210.02

Finding the Fourth Proportional to 20,981.58, 28,957.41 and 19,210.02

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Solution

The fourth proportional to 20,981.58, 28,957.41 and 19,210.02 is: 26,512.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981.58 : 28,957.41 = 19,210.02 : x
  2. Step 2: Convert to fraction form
    20,981.58/28,957.41 = 19,210.02/x
  3. Step 3: Cross multiply
    20,981.58x = 28,957.41 × 19,210.02
  4. Step 4: Simplify right side
    20,981.58x = 556,272,425.25
  5. Step 5: Solve for x
    x = 556,272,425.25/20,981.58
  6. Step 6: Final answer
    x = 26,512.42

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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.