Home / 20,637.56-28,465.26-12,684.26

Finding the Fourth Proportional to 20,637.56, 28,465.26 and 12,684.26

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Solution

The fourth proportional to 20,637.56, 28,465.26 and 12,684.26 is: 17,495.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,637.56 : 28,465.26 = 12,684.26 : x
  2. Step 2: Convert to fraction form
    20,637.56/28,465.26 = 12,684.26/x
  3. Step 3: Cross multiply
    20,637.56x = 28,465.26 × 12,684.26
  4. Step 4: Simplify right side
    20,637.56x = 361,060,758.81
  5. Step 5: Solve for x
    x = 361,060,758.81/20,637.56
  6. Step 6: Final answer
    x = 17,495.32

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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.