Home / 22,159.76-30,580.26-12,728.39

Finding the Fourth Proportional to 22,159.76, 30,580.26 and 12,728.39

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Solution

The fourth proportional to 22,159.76, 30,580.26 and 12,728.39 is: 17,565.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,159.76 : 30,580.26 = 12,728.39 : x
  2. Step 2: Convert to fraction form
    22,159.76/30,580.26 = 12,728.39/x
  3. Step 3: Cross multiply
    22,159.76x = 30,580.26 × 12,728.39
  4. Step 4: Simplify right side
    22,159.76x = 389,237,475.58
  5. Step 5: Solve for x
    x = 389,237,475.58/22,159.76
  6. Step 6: Final answer
    x = 17,565.06

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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.