Home / 20,577.23-28,396.32-12,508.21

Finding the Fourth Proportional to 20,577.23, 28,396.32 and 12,508.21

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Solution

The fourth proportional to 20,577.23, 28,396.32 and 12,508.21 is: 17,261.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,577.23 : 28,396.32 = 12,508.21 : x
  2. Step 2: Convert to fraction form
    20,577.23/28,396.32 = 12,508.21/x
  3. Step 3: Cross multiply
    20,577.23x = 28,396.32 × 12,508.21
  4. Step 4: Simplify right side
    20,577.23x = 355,186,991.81
  5. Step 5: Solve for x
    x = 355,186,991.81/20,577.23
  6. Step 6: Final answer
    x = 17,261.17

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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.