Home / 22,170.51-30,595.05-12,738.87

Finding the Fourth Proportional to 22,170.51, 30,595.05 and 12,738.87

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Solution

The fourth proportional to 22,170.51, 30,595.05 and 12,738.87 is: 17,579.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,170.51 : 30,595.05 = 12,738.87 : x
  2. Step 2: Convert to fraction form
    22,170.51/30,595.05 = 12,738.87/x
  3. Step 3: Cross multiply
    22,170.51x = 30,595.05 × 12,738.87
  4. Step 4: Simplify right side
    22,170.51x = 389,746,364.59
  5. Step 5: Solve for x
    x = 389,746,364.59/22,170.51
  6. Step 6: Final answer
    x = 17,579.49

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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.