Home / 20,683.08-28,522.80-13,892.45

Finding the Fourth Proportional to 20,683.08, 28,522.80 and 13,892.45

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Solution

The fourth proportional to 20,683.08, 28,522.80 and 13,892.45 is: 19,158.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683.08 : 28,522.80 = 13,892.45 : x
  2. Step 2: Convert to fraction form
    20,683.08/28,522.80 = 13,892.45/x
  3. Step 3: Cross multiply
    20,683.08x = 28,522.80 × 13,892.45
  4. Step 4: Simplify right side
    20,683.08x = 396,251,430.25
  5. Step 5: Solve for x
    x = 396,251,430.25/20,683.08
  6. Step 6: Final answer
    x = 19,158.24

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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.