Home / 16,490.40-22,738.44-12,705.12

Finding the Fourth Proportional to 16,490.40, 22,738.44 and 12,705.12

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Solution

The fourth proportional to 16,490.40, 22,738.44 and 12,705.12 is: 17,518.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,490.40 : 22,738.44 = 12,705.12 : x
  2. Step 2: Convert to fraction form
    16,490.40/22,738.44 = 12,705.12/x
  3. Step 3: Cross multiply
    16,490.40x = 22,738.44 × 12,705.12
  4. Step 4: Simplify right side
    16,490.40x = 288,894,608.81
  5. Step 5: Solve for x
    x = 288,894,608.81/16,490.40
  6. Step 6: Final answer
    x = 17,518.96

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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.