Home / 20,600.48-28,426.56-12,643.04

Finding the Fourth Proportional to 20,600.48, 28,426.56 and 12,643.04

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Solution

The fourth proportional to 20,600.48, 28,426.56 and 12,643.04 is: 17,446.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.48 : 28,426.56 = 12,643.04 : x
  2. Step 2: Convert to fraction form
    20,600.48/28,426.56 = 12,643.04/x
  3. Step 3: Cross multiply
    20,600.48x = 28,426.56 × 12,643.04
  4. Step 4: Simplify right side
    20,600.48x = 359,398,135.14
  5. Step 5: Solve for x
    x = 359,398,135.14/20,600.48
  6. Step 6: Final answer
    x = 17,446.10

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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.