Home / 14,705.16-20,293.20-7,990.84

Finding the Fourth Proportional to 14,705.16, 20,293.20 and 7,990.84

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Solution

The fourth proportional to 14,705.16, 20,293.20 and 7,990.84 is: 11,027.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,705.16 : 20,293.20 = 7,990.84 : x
  2. Step 2: Convert to fraction form
    14,705.16/20,293.20 = 7,990.84/x
  3. Step 3: Cross multiply
    14,705.16x = 20,293.20 × 7,990.84
  4. Step 4: Simplify right side
    14,705.16x = 162,159,714.29
  5. Step 5: Solve for x
    x = 162,159,714.29/14,705.16
  6. Step 6: Final answer
    x = 11,027.40

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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.