Home / 20,575.80-28,374.73-17,389.17

Finding the Fourth Proportional to 20,575.80, 28,374.73 and 17,389.17

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Solution

The fourth proportional to 20,575.80, 28,374.73 and 17,389.17 is: 23,980.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,575.80 : 28,374.73 = 17,389.17 : x
  2. Step 2: Convert to fraction form
    20,575.80/28,374.73 = 17,389.17/x
  3. Step 3: Cross multiply
    20,575.80x = 28,374.73 × 17,389.17
  4. Step 4: Simplify right side
    20,575.80x = 493,412,960.20
  5. Step 5: Solve for x
    x = 493,412,960.20/20,575.80
  6. Step 6: Final answer
    x = 23,980.26

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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.